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jason-rodri merged 7 commits intoFIPS-8from
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Apr 18, 2024
Merged

{rsahlberg} latest batch of cves#1
jason-rodri merged 7 commits intoFIPS-8from
{rsahlberg}_latest_batch_of_cves

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PlaidCat and others added 7 commits April 17, 2024 18:30
jira SECO-46
cve CVE-2024-1086
commit f342de4e2f33e0e39165d8639387aa6c19dff660
upstream-diff fallthrough is a keyword in the upstream where as we have
a comment to indicate that there is fall through on the default switch.

This reverts commit e0abdadcc6e1.

core.c:nf_hook_slow assumes that the upper 16 bits of NF_DROP
verdicts contain a valid errno, i.e. -EPERM, -EHOSTUNREACH or similar,
or 0.

Due to the reverted commit, its possible to provide a positive
value, e.g. NF_ACCEPT (1), which results in use-after-free.

Its not clear to me why this commit was made.

NF_QUEUE is not used by nftables; "queue" rules in nftables
will result in use of "nft_queue" expression.

If we later need to allow specifiying errno values from userspace
(do not know why), this has to call NF_DROP_GETERR and check that
"err <= 0" holds true.

Fixes: e0abdadcc6e1 ("netfilter: nf_tables: accept QUEUE/DROP verdict parameters")
	Cc: stable@vger.kernel.org
	Reported-by: Notselwyn <notselwyn@pwning.tech>
	Signed-off-by: Florian Westphal <fw@strlen.de>
	Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
(cherry picked from commit f342de4e2f33e0e39165d8639387aa6c19dff660)
Signed-off-by: Jonathan Maple <jmaple@ciq.com>
jira SECO-47
cve CVE-2024-0565
commit eec04ea119691e65227a97ce53c0da6b9b74b0b7
upstream-diff no diff for the file content but the file location
has changed from fs/cifs/ to fs/smb/client/

Fix potential OOB in receive_encrypted_standard() if server returned a
large shdr->NextCommand that would end up writing off the end of
@next_buffer.

Fixes: b24df3e30cbf ("cifs: update receive_encrypted_standard to
handle compounded responses")
    Cc: stable@vger.kernel.org
    Reported-by: Robert Morris <rtm@csail.mit.edu>
    Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
    Signed-off-by: Steve French <stfrench@microsoft.com>

Signed-off-by: Ronnie Sahlberg <rsahlberg@ciq.com>
jira SECO-48
cve CVE-2023-51042
commit 2e54154b9f27262efd0cb4f903cc7d5ad1fe9628

fence Decrements the reference count before exiting.
Avoid Race Vulnerabilities for fence use-after-free.

v2 (chk): actually fix the use after free and not just move it.

    Signed-off-by: shanzhulig <shanzhulig@gmail.com>
    Signed-off-by: Christian König <christian.koenig@amd.com>
    Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    (cherry picked from commit 2e54154b9f27262efd0cb4f903cc7d5ad1fe9628)
Signed-off-by: Ronnie Sahlberg <rsahlberg@ciq.com>
jira SECO-54
cve CVE-2023-6931
commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b
upstream-diff trivial diff against upstream as we do not have
PERF_FORMAT_LOST(119a784c8) in 8.8. PERF_FORMAT_LOST is a counter
that was exposed to userspace post 8.8 so we do not need it backported.

Budimir noted that perf_event_validate_size() only checks the size of
the newly added event, even though the sizes of all existing events
can also change due to not all events having the same read_format.

When we attach the new event, perf_group_attach(), we do re-compute
the size for all events.

Fixes: a723968c0ed3 ("perf: Fix u16 overflows")
    Reported-by: Budimir Markovic <markovicbudimir@gmail.com>
    Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    (cherry picked from commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b)
Signed-off-by: Ronnie Sahlberg <rsahlberg@ciq.com>
jira SECO-54
cve-bugfix CVE-2023-6931
commit 7e2c1e4b34f07d9aa8937fab88359d4a0fce468e

When lockdep is enabled, the for_each_sibling_event(sibling, event)
macro checks that event->ctx->mutex is held. When creating a new group
leader event, we call perf_event_validate_size() on a partially
initialized event where event->ctx is NULL, and so when
for_each_sibling_event() attempts to check event->ctx->mutex, we get a
splat, as reported by Lucas De Marchi:

  WARNING: CPU: 8 PID: 1471 at kernel/events/core.c:1950 __do_sys_perf_event_open+0xf37/0x1080

This only happens for a new event which is its own group_leader, and in
this case there cannot be any sibling events. Thus it's safe to skip the
check for siblings, which avoids having to make invasive and ugly
changes to for_each_sibling_event().

Avoid the splat by bailing out early when the new event is its own
group_leader.

Fixes: 382c27f4ed28f803 ("perf: Fix perf_event_validate_size()")
Closes: https://lore.kernel.org/lkml/20231214000620.3081018-1-lucas.demarchi@intel.com/
Closes: https://lore.kernel.org/lkml/ZXpm6gQ%2Fd59jGsuW@xpf.sh.intel.com/
    Reported-by: Lucas De Marchi <lucas.demarchi@intel.com>
    Reported-by: Pengfei Xu <pengfei.xu@intel.com>
    Signed-off-by: Mark Rutland <mark.rutland@arm.com>
    Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Link: https://lkml.kernel.org/r/20231215112450.3972309-1-mark.rutland@arm.com
    (cherry picked from commit 7e2c1e4b34f07d9aa8937fab88359d4a0fce468e)
Signed-off-by: Ronnie Sahlberg <rsahlberg@ciq.com>
jira SECO-51
cve CVE-2021-33631
commit 5c099c4fdc438014d5893629e70a8ba934433ee8
upstream-diff we are missing an entire series that refactors this part
of the code (4df031ff5876,  55ce2f649b9e,  6984aef59814,
cc883236b79297f)
but we keep the spirit of the original commit:
add an extra conditional for when we perform an inline write.

Syzbot report follow issue:
------------[ cut here ]------------
kernel BUG at fs/ext4/inline.c:227!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3629 Comm: syz-executor212 Not tainted 6.1.0-rc5-syzkaller-00018-g59d0d52c30d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:ext4_write_inline_data+0x344/0x3e0 fs/ext4/inline.c:227
RSP: 0018:ffffc90003b3f368 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880704e16c0 RCX: 0000000000000000
RDX: ffff888021763a80 RSI: ffffffff821e31a4 RDI: 0000000000000006
RBP: 000000000006818e R08: 0000000000000006 R09: 0000000000068199
R10: 0000000000000079 R11: 0000000000000000 R12: 000000000000000b
R13: 0000000000068199 R14: ffffc90003b3f408 R15: ffff8880704e1c82
FS:  000055555723e3c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffe8ac9080 CR3: 0000000079f81000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 ext4_write_inline_data_end+0x2a3/0x12f0 fs/ext4/inline.c:768
 ext4_write_end+0x242/0xdd0 fs/ext4/inode.c:1313
 ext4_da_write_end+0x3ed/0xa30 fs/ext4/inode.c:3063
 generic_perform_write+0x316/0x570 mm/filemap.c:3764
 ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
 ext4_file_write_iter+0x8bc/0x16e0 fs/ext4/file.c:700
 call_write_iter include/linux/fs.h:2191 [inline]
 do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735
 do_iter_write+0x182/0x700 fs/read_write.c:861
 vfs_iter_write+0x74/0xa0 fs/read_write.c:902
 iter_file_splice_write+0x745/0xc90 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0x114/0x180 fs/splice.c:931
 splice_direct_to_actor+0x335/0x8a0 fs/splice.c:886
 do_splice_direct+0x1ab/0x280 fs/splice.c:974
 do_sendfile+0xb19/0x1270 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1309
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
---[ end trace 0000000000000000 ]---

Above issue may happens as follows:
ext4_da_write_begin
  ext4_da_write_inline_data_begin
    ext4_da_convert_inline_data_to_extent
      ext4_clear_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA);
ext4_da_write_end

ext4_run_li_request
  ext4_mb_prefetch
    ext4_read_block_bitmap_nowait
      ext4_validate_block_bitmap
        ext4_mark_group_bitmap_corrupted(sb, block_group, EXT4_GROUP_INFO_BBITMAP_CORRUPT)
	 percpu_counter_sub(&sbi->s_freeclusters_counter,grp->bb_free);
	  -> sbi->s_freeclusters_counter become zero
ext4_da_write_begin
  if (ext4_nonda_switch(inode->i_sb)) -> As freeclusters_counter is zero will return true
    *fsdata = (void *)FALL_BACK_TO_NONDELALLOC;
    ext4_write_begin
ext4_da_write_end
  if (write_mode == FALL_BACK_TO_NONDELALLOC)
    ext4_write_end
      if (inline_data)
        ext4_write_inline_data_end
	  ext4_write_inline_data
	    BUG_ON(pos + len > EXT4_I(inode)->i_inline_size);
           -> As inode is already convert to extent, so 'pos + len' > inline_size
	   -> then trigger BUG.

To solve this issue, instead of checking ext4_has_inline_data() which
is only cleared after data has been written back, check the
EXT4_STATE_MAY_INLINE_DATA flag in ext4_write_end().

Fixes: f19d5870cbf7 ("ext4: add normal write support for inline data")
Reported-by: syzbot+4faa160fa96bfba639f8@syzkaller.appspotmail.com
Reported-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Ye Bin <yebin10@huawei.com>
Link: https://lore.kernel.org/r/20221206144134.1919987-1-yebin@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
(cherry picked from commit 5c099c4fdc438014d5893629e70a8ba934433ee8)
Signed-off-by: Ronnie Sahlberg <rsahlberg@ciq.com>
jira SECO-49
cve CVE-2023-6546
commit 3c4f8333b582487a2d1e02171f1465531cde53e3
upstream-diff we are missing several refactors of this file from
upstream and while we do not have Fixes commits in this tree, the
same bug that this addresses "grabbing the dlci pointer before taking
the mutex" still exists before those two commits.
In this case it is not that the pointer can be
NULLed while the second thread waits for the mutex but that the pointer
could be free()d in the call to gsm_dlci_release() and no longer be
valid. This could cause memory corruption as we will write to the area
pointed to.

In commit 9b9c8195f3f0 ("tty: n_gsm: fix UAF in gsm_cleanup_mux"), the UAF
problem is not completely fixed. There is a race condition in
gsm_cleanup_mux(), which caused this UAF.

The UAF problem is triggered by the following race:
task[5046]                     task[5054]
-----------------------        -----------------------
gsm_cleanup_mux();
dlci = gsm->dlci[0];
mutex_lock(&gsm->mutex);
                               gsm_cleanup_mux();
                               dlci = gsm->dlci[0]; //Didn't take the
lock
gsm_dlci_release(gsm->dlci[i]);
gsm->dlci[i] = NULL;
mutex_unlock(&gsm->mutex);
                               mutex_lock(&gsm->mutex);
                               dlci->dead = true; //UAF

Fix it by assigning values after mutex_lock().

    Link: https://syzkaller.appspot.com/text?tag=CrashReport&x=176188b5a80000
    Cc: stable <stable@kernel.org>
    Fixes: 9b9c8195f3f0 ("tty: n_gsm: fix UAF in gsm_cleanup_mux")
    Fixes: aa371e96f05d ("tty: n_gsm: fix restart handling via CLD command")
    Signed-off-by: Yi Yang <yiyang13@huawei.com>
    Co-developed-by: Qiumiao Zhang <zhangqiumiao1@huawei.com>
    Signed-off-by: Qiumiao Zhang <zhangqiumiao1@huawei.com>
    Link: https://lore.kernel.org/r/20230811031121.153237-1-yiyang13@huawei.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Ronnie Sahlberg <rsahlberg@ciq.com>
@dvdgomez dvdgomez self-requested a review April 18, 2024 15:55
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LGTM

@jason-rodri jason-rodri merged commit 8b41f68 into FIPS-8 Apr 18, 2024
PlaidCat added a commit that referenced this pull request Aug 2, 2024
… UAF

jira LE-1634
cve CVE-2023-3567
commit 226fae124b2dac217ea5436060d623ff3385bc34
upstream-diff: There is a minor conflict due to this feature is not backported
- d21b0be246bf3bbf569e6e239f56abb529c7154e - vt: introduce unicode mode for /dev/vcs
Since this is not done we maintained the same attr = (curron & 128) that
has a slight fuzz from the original CVE backport.

After a call to console_unlock() in vcs_read() the vc_data struct can be
freed by vc_deallocate(). Because of that, the struct vc_data pointer
load must be done at the top of while loop in vcs_read() to avoid a UAF
when vcs_size() is called.

Syzkaller reported a UAF in vcs_size().

BUG: KASAN: use-after-free in vcs_size (drivers/tty/vt/vc_screen.c:215)
Read of size 4 at addr ffff8881137479a8 by task 4a005ed81e27e65/1537

CPU: 0 PID: 1537 Comm: 4a005ed81e27e65 Not tainted 6.2.0-rc5 #1
Hardware name: Red Hat KVM, BIOS 1.15.0-2.module
Call Trace:
  <TASK>
__asan_report_load4_noabort (mm/kasan/report_generic.c:350)
vcs_size (drivers/tty/vt/vc_screen.c:215)
vcs_read (drivers/tty/vt/vc_screen.c:415)
vfs_read (fs/read_write.c:468 fs/read_write.c:450)
...
  </TASK>

Allocated by task 1191:
...
kmalloc_trace (mm/slab_common.c:1069)
vc_allocate (./include/linux/slab.h:580 ./include/linux/slab.h:720
     drivers/tty/vt/vt.c:1128 drivers/tty/vt/vt.c:1108)
con_install (drivers/tty/vt/vt.c:3383)
tty_init_dev (drivers/tty/tty_io.c:1301 drivers/tty/tty_io.c:1413
     drivers/tty/tty_io.c:1390)
tty_open (drivers/tty/tty_io.c:2080 drivers/tty/tty_io.c:2126)
chrdev_open (fs/char_dev.c:415)
do_dentry_open (fs/open.c:883)
vfs_open (fs/open.c:1014)
...

Freed by task 1548:
...
kfree (mm/slab_common.c:1021)
vc_port_destruct (drivers/tty/vt/vt.c:1094)
tty_port_destructor (drivers/tty/tty_port.c:296)
tty_port_put (drivers/tty/tty_port.c:312)
vt_disallocate_all (drivers/tty/vt/vt_ioctl.c:662 (discriminator 2))
vt_ioctl (drivers/tty/vt/vt_ioctl.c:903)
tty_ioctl (drivers/tty/tty_io.c:2776)
...

The buggy address belongs to the object at ffff888113747800
  which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 424 bytes inside of
  1024-byte region [ffff888113747800, ffff888113747c00)

The buggy address belongs to the physical page:
page:00000000b3fe6c7c refcount:1 mapcount:0 mapping:0000000000000000
     index:0x0 pfn:0x113740
head:00000000b3fe6c7c order:3 compound_mapcount:0 subpages_mapcount:0
     compound_pincount:0
anon flags: 0x17ffffc0010200(slab|head|node=0|zone=2|lastcpupid=0x1fffff)
raw: 0017ffffc0010200 ffff888100042dc0 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
  ffff888113747880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
  ffff888113747900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ffff888113747980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                   ^
  ffff888113747a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
  ffff888113747a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Disabling lock debugging due to kernel taint

Fixes: ac751efa6a0d ("console: rename acquire/release_console_sem() to console_lock/unlock()")
	Reported-by: syzkaller <syzkaller@googlegroups.com>
	Suggested-by: Jiri Slaby <jirislaby@kernel.org>
	Signed-off-by: George Kennedy <george.kennedy@oracle.com>
Link: https://lore.kernel.org/r/1674577014-12374-1-git-send-email-george.kennedy@oracle.com
	Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 226fae124b2dac217ea5436060d623ff3385bc34)
Signed-off-by: Jonathan Maple <jmaple@ciq.com>
PlaidCat added a commit that referenced this pull request Aug 2, 2024
… UAF

jira LE-1634
cve CVE-2023-3567
commit 226fae124b2dac217ea5436060d623ff3385bc34
upstream-diff: There is a minor conflict due to this feature is not backported
- d21b0be246bf3bbf569e6e239f56abb529c7154e - vt: introduce unicode mode for /dev/vcs
Since this is not done we maintained the same attr = (curron & 128) that
has a slight fuzz from the original CVE backport.

After a call to console_unlock() in vcs_read() the vc_data struct can be
freed by vc_deallocate(). Because of that, the struct vc_data pointer
load must be done at the top of while loop in vcs_read() to avoid a UAF
when vcs_size() is called.

Syzkaller reported a UAF in vcs_size().

BUG: KASAN: use-after-free in vcs_size (drivers/tty/vt/vc_screen.c:215)
Read of size 4 at addr ffff8881137479a8 by task 4a005ed81e27e65/1537

CPU: 0 PID: 1537 Comm: 4a005ed81e27e65 Not tainted 6.2.0-rc5 #1
Hardware name: Red Hat KVM, BIOS 1.15.0-2.module
Call Trace:
  <TASK>
__asan_report_load4_noabort (mm/kasan/report_generic.c:350)
vcs_size (drivers/tty/vt/vc_screen.c:215)
vcs_read (drivers/tty/vt/vc_screen.c:415)
vfs_read (fs/read_write.c:468 fs/read_write.c:450)
...
  </TASK>

Allocated by task 1191:
...
kmalloc_trace (mm/slab_common.c:1069)
vc_allocate (./include/linux/slab.h:580 ./include/linux/slab.h:720
     drivers/tty/vt/vt.c:1128 drivers/tty/vt/vt.c:1108)
con_install (drivers/tty/vt/vt.c:3383)
tty_init_dev (drivers/tty/tty_io.c:1301 drivers/tty/tty_io.c:1413
     drivers/tty/tty_io.c:1390)
tty_open (drivers/tty/tty_io.c:2080 drivers/tty/tty_io.c:2126)
chrdev_open (fs/char_dev.c:415)
do_dentry_open (fs/open.c:883)
vfs_open (fs/open.c:1014)
...

Freed by task 1548:
...
kfree (mm/slab_common.c:1021)
vc_port_destruct (drivers/tty/vt/vt.c:1094)
tty_port_destructor (drivers/tty/tty_port.c:296)
tty_port_put (drivers/tty/tty_port.c:312)
vt_disallocate_all (drivers/tty/vt/vt_ioctl.c:662 (discriminator 2))
vt_ioctl (drivers/tty/vt/vt_ioctl.c:903)
tty_ioctl (drivers/tty/tty_io.c:2776)
...

The buggy address belongs to the object at ffff888113747800
  which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 424 bytes inside of
  1024-byte region [ffff888113747800, ffff888113747c00)

The buggy address belongs to the physical page:
page:00000000b3fe6c7c refcount:1 mapcount:0 mapping:0000000000000000
     index:0x0 pfn:0x113740
head:00000000b3fe6c7c order:3 compound_mapcount:0 subpages_mapcount:0
     compound_pincount:0
anon flags: 0x17ffffc0010200(slab|head|node=0|zone=2|lastcpupid=0x1fffff)
raw: 0017ffffc0010200 ffff888100042dc0 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
  ffff888113747880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
  ffff888113747900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ffff888113747980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                   ^
  ffff888113747a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
  ffff888113747a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Disabling lock debugging due to kernel taint

Fixes: ac751efa6a0d ("console: rename acquire/release_console_sem() to console_lock/unlock()")
	Reported-by: syzkaller <syzkaller@googlegroups.com>
	Suggested-by: Jiri Slaby <jirislaby@kernel.org>
	Signed-off-by: George Kennedy <george.kennedy@oracle.com>
Link: https://lore.kernel.org/r/1674577014-12374-1-git-send-email-george.kennedy@oracle.com
	Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 226fae124b2dac217ea5436060d623ff3385bc34)
Signed-off-by: Jonathan Maple <jmaple@ciq.com>
PlaidCat pushed a commit that referenced this pull request Oct 16, 2024
jira VULN-5318
cve CVE-2024-36886
commit-author Paolo Abeni <pabeni@redhat.com>
commit 080cbb890286cd794f1ee788bbc5463e2deb7c2b

Sam Page (sam4k) working with Trend Micro Zero Day Initiative reported
a UAF in the tipc_buf_append() error path:

BUG: KASAN: slab-use-after-free in kfree_skb_list_reason+0x47e/0x4c0
linux/net/core/skbuff.c:1183
Read of size 8 at addr ffff88804d2a7c80 by task poc/8034

CPU: 1 PID: 8034 Comm: poc Not tainted 6.8.2 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.16.0-debian-1.16.0-5 04/01/2014
Call Trace:
 <IRQ>
 __dump_stack linux/lib/dump_stack.c:88
 dump_stack_lvl+0xd9/0x1b0 linux/lib/dump_stack.c:106
 print_address_description linux/mm/kasan/report.c:377
 print_report+0xc4/0x620 linux/mm/kasan/report.c:488
 kasan_report+0xda/0x110 linux/mm/kasan/report.c:601
 kfree_skb_list_reason+0x47e/0x4c0 linux/net/core/skbuff.c:1183
 skb_release_data+0x5af/0x880 linux/net/core/skbuff.c:1026
 skb_release_all linux/net/core/skbuff.c:1094
 __kfree_skb linux/net/core/skbuff.c:1108
 kfree_skb_reason+0x12d/0x210 linux/net/core/skbuff.c:1144
 kfree_skb linux/./include/linux/skbuff.h:1244
 tipc_buf_append+0x425/0xb50 linux/net/tipc/msg.c:186
 tipc_link_input+0x224/0x7c0 linux/net/tipc/link.c:1324
 tipc_link_rcv+0x76e/0x2d70 linux/net/tipc/link.c:1824
 tipc_rcv+0x45f/0x10f0 linux/net/tipc/node.c:2159
 tipc_udp_recv+0x73b/0x8f0 linux/net/tipc/udp_media.c:390
 udp_queue_rcv_one_skb+0xad2/0x1850 linux/net/ipv4/udp.c:2108
 udp_queue_rcv_skb+0x131/0xb00 linux/net/ipv4/udp.c:2186
 udp_unicast_rcv_skb+0x165/0x3b0 linux/net/ipv4/udp.c:2346
 __udp4_lib_rcv+0x2594/0x3400 linux/net/ipv4/udp.c:2422
 ip_protocol_deliver_rcu+0x30c/0x4e0 linux/net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x2e4/0x520 linux/net/ipv4/ip_input.c:233
 NF_HOOK linux/./include/linux/netfilter.h:314
 NF_HOOK linux/./include/linux/netfilter.h:308
 ip_local_deliver+0x18e/0x1f0 linux/net/ipv4/ip_input.c:254
 dst_input linux/./include/net/dst.h:461
 ip_rcv_finish linux/net/ipv4/ip_input.c:449
 NF_HOOK linux/./include/linux/netfilter.h:314
 NF_HOOK linux/./include/linux/netfilter.h:308
 ip_rcv+0x2c5/0x5d0 linux/net/ipv4/ip_input.c:569
 __netif_receive_skb_one_core+0x199/0x1e0 linux/net/core/dev.c:5534
 __netif_receive_skb+0x1f/0x1c0 linux/net/core/dev.c:5648
 process_backlog+0x101/0x6b0 linux/net/core/dev.c:5976
 __napi_poll.constprop.0+0xba/0x550 linux/net/core/dev.c:6576
 napi_poll linux/net/core/dev.c:6645
 net_rx_action+0x95a/0xe90 linux/net/core/dev.c:6781
 __do_softirq+0x21f/0x8e7 linux/kernel/softirq.c:553
 do_softirq linux/kernel/softirq.c:454
 do_softirq+0xb2/0xf0 linux/kernel/softirq.c:441
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x100/0x120 linux/kernel/softirq.c:381
 local_bh_enable linux/./include/linux/bottom_half.h:33
 rcu_read_unlock_bh linux/./include/linux/rcupdate.h:851
 __dev_queue_xmit+0x871/0x3ee0 linux/net/core/dev.c:4378
 dev_queue_xmit linux/./include/linux/netdevice.h:3169
 neigh_hh_output linux/./include/net/neighbour.h:526
 neigh_output linux/./include/net/neighbour.h:540
 ip_finish_output2+0x169f/0x2550 linux/net/ipv4/ip_output.c:235
 __ip_finish_output linux/net/ipv4/ip_output.c:313
 __ip_finish_output+0x49e/0x950 linux/net/ipv4/ip_output.c:295
 ip_finish_output+0x31/0x310 linux/net/ipv4/ip_output.c:323
 NF_HOOK_COND linux/./include/linux/netfilter.h:303
 ip_output+0x13b/0x2a0 linux/net/ipv4/ip_output.c:433
 dst_output linux/./include/net/dst.h:451
 ip_local_out linux/net/ipv4/ip_output.c:129
 ip_send_skb+0x3e5/0x560 linux/net/ipv4/ip_output.c:1492
 udp_send_skb+0x73f/0x1530 linux/net/ipv4/udp.c:963
 udp_sendmsg+0x1a36/0x2b40 linux/net/ipv4/udp.c:1250
 inet_sendmsg+0x105/0x140 linux/net/ipv4/af_inet.c:850
 sock_sendmsg_nosec linux/net/socket.c:730
 __sock_sendmsg linux/net/socket.c:745
 __sys_sendto+0x42c/0x4e0 linux/net/socket.c:2191
 __do_sys_sendto linux/net/socket.c:2203
 __se_sys_sendto linux/net/socket.c:2199
 __x64_sys_sendto+0xe0/0x1c0 linux/net/socket.c:2199
 do_syscall_x64 linux/arch/x86/entry/common.c:52
 do_syscall_64+0xd8/0x270 linux/arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6f/0x77 linux/arch/x86/entry/entry_64.S:120
RIP: 0033:0x7f3434974f29
Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48
89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d
01 f0 ff ff 73 01 c3 48 8b 0d 37 8f 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007fff9154f2b8 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3434974f29
RDX: 00000000000032c8 RSI: 00007fff9154f300 RDI: 0000000000000003
RBP: 00007fff915532e0 R08: 00007fff91553360 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000212 R12: 000055ed86d261d0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

In the critical scenario, either the relevant skb is freed or its
ownership is transferred into a frag_lists. In both cases, the cleanup
code must not free it again: we need to clear the skb reference earlier.

Fixes: 1149557d64c9 ("tipc: eliminate unnecessary linearization of incoming buffers")
	Cc: stable@vger.kernel.org
	Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-23852
	Acked-by: Xin Long <lucien.xin@gmail.com>
	Signed-off-by: Paolo Abeni <pabeni@redhat.com>
	Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/752f1ccf762223d109845365d07f55414058e5a3.1714484273.git.pabeni@redhat.com
	Signed-off-by: Jakub Kicinski <kuba@kernel.org>
(cherry picked from commit 080cbb890286cd794f1ee788bbc5463e2deb7c2b)
	Signed-off-by: Greg Rose <g.v.rose@ciq.com>
PlaidCat pushed a commit that referenced this pull request Oct 16, 2024
jira VULN-5432
cve CVE-2024-36904
commit-author Kuniyuki Iwashima <kuniyu@amazon.com>
commit f2db7230f73a80dbb179deab78f88a7947f0ab7e

Anderson Nascimento reported a use-after-free splat in tcp_twsk_unique()
with nice analysis.

Since commit ec94c2696f0b ("tcp/dccp: avoid one atomic operation for
timewait hashdance"), inet_twsk_hashdance() sets TIME-WAIT socket's
sk_refcnt after putting it into ehash and releasing the bucket lock.

Thus, there is a small race window where other threads could try to
reuse the port during connect() and call sock_hold() in tcp_twsk_unique()
for the TIME-WAIT socket with zero refcnt.

If that happens, the refcnt taken by tcp_twsk_unique() is overwritten
and sock_put() will cause underflow, triggering a real use-after-free
somewhere else.

To avoid the use-after-free, we need to use refcount_inc_not_zero() in
tcp_twsk_unique() and give up on reusing the port if it returns false.

[0]:
refcount_t: addition on 0; use-after-free.
WARNING: CPU: 0 PID: 1039313 at lib/refcount.c:25 refcount_warn_saturate+0xe5/0x110
CPU: 0 PID: 1039313 Comm: trigger Not tainted 6.8.6-200.fc39.x86_64 #1
Hardware name: VMware, Inc. VMware20,1/440BX Desktop Reference Platform, BIOS VMW201.00V.21805430.B64.2305221830 05/22/2023
RIP: 0010:refcount_warn_saturate+0xe5/0x110
Code: 42 8e ff 0f 0b c3 cc cc cc cc 80 3d aa 13 ea 01 00 0f 85 5e ff ff ff 48 c7 c7 f8 8e b7 82 c6 05 96 13 ea 01 01 e8 7b 42 8e ff <0f> 0b c3 cc cc cc cc 48 c7 c7 50 8f b7 82 c6 05 7a 13 ea 01 01 e8
RSP: 0018:ffffc90006b43b60 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff888009bb3ef0 RCX: 0000000000000027
RDX: ffff88807be218c8 RSI: 0000000000000001 RDI: ffff88807be218c0
RBP: 0000000000069d70 R08: 0000000000000000 R09: ffffc90006b439f0
R10: ffffc90006b439e8 R11: 0000000000000003 R12: ffff8880029ede84
R13: 0000000000004e20 R14: ffffffff84356dc0 R15: ffff888009bb3ef0
FS:  00007f62c10926c0(0000) GS:ffff88807be00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ccb000 CR3: 000000004628c005 CR4: 0000000000f70ef0
PKRU: 55555554
Call Trace:
 <TASK>
 ? refcount_warn_saturate+0xe5/0x110
 ? __warn+0x81/0x130
 ? refcount_warn_saturate+0xe5/0x110
 ? report_bug+0x171/0x1a0
 ? refcount_warn_saturate+0xe5/0x110
 ? handle_bug+0x3c/0x80
 ? exc_invalid_op+0x17/0x70
 ? asm_exc_invalid_op+0x1a/0x20
 ? refcount_warn_saturate+0xe5/0x110
 tcp_twsk_unique+0x186/0x190
 __inet_check_established+0x176/0x2d0
 __inet_hash_connect+0x74/0x7d0
 ? __pfx___inet_check_established+0x10/0x10
 tcp_v4_connect+0x278/0x530
 __inet_stream_connect+0x10f/0x3d0
 inet_stream_connect+0x3a/0x60
 __sys_connect+0xa8/0xd0
 __x64_sys_connect+0x18/0x20
 do_syscall_64+0x83/0x170
 entry_SYSCALL_64_after_hwframe+0x78/0x80
RIP: 0033:0x7f62c11a885d
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a3 45 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007f62c1091e58 EFLAGS: 00000296 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000020ccb004 RCX: 00007f62c11a885d
RDX: 0000000000000010 RSI: 0000000020ccb000 RDI: 0000000000000003
RBP: 00007f62c1091e90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 00007f62c10926c0
R13: ffffffffffffff88 R14: 0000000000000000 R15: 00007ffe237885b0
 </TASK>

Fixes: ec94c2696f0b ("tcp/dccp: avoid one atomic operation for timewait hashdance")
	Reported-by: Anderson Nascimento <anderson@allelesecurity.com>
Closes: https://lore.kernel.org/netdev/37a477a6-d39e-486b-9577-3463f655a6b7@allelesecurity.com/
	Suggested-by: Eric Dumazet <edumazet@google.com>
	Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
	Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240501213145.62261-1-kuniyu@amazon.com
	Signed-off-by: Jakub Kicinski <kuba@kernel.org>
(cherry picked from commit f2db7230f73a80dbb179deab78f88a7947f0ab7e)
	Signed-off-by: Greg Rose <g.v.rose@ciq.com>
PlaidCat added a commit that referenced this pull request Oct 16, 2024
jira VULN-429
subsystem-sync netfilter:nf_tables 4.18.0-511
commit-author Florian Westphal <fw@strlen.de>
commit 314c82841602a111c04a7210c21dc77e0d560242

Can be called via nft set element list iteration, which may acquire
rcu and/or bh read lock (depends on set type).

BUG: sleeping function called from invalid context at net/netfilter/nf_tables_api.c:3353
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 1232, name: nft
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
2 locks held by nft/1232:
 #0: ffff8881180e3ea8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid
 #1: ffffffff83f5f540 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire
Call Trace:
 nft_chain_validate
 nft_lookup_validate_setelem
 nft_pipapo_walk
 nft_lookup_validate
 nft_chain_validate
 nft_immediate_validate
 nft_chain_validate
 nf_tables_validate
 nf_tables_abort

No choice but to move it to nf_tables_validate().

Fixes: 81ea01066741 ("netfilter: nf_tables: add rescheduling points during loop detection walks")
	Signed-off-by: Florian Westphal <fw@strlen.de>
(cherry picked from commit 314c82841602a111c04a7210c21dc77e0d560242)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>
PlaidCat pushed a commit that referenced this pull request Nov 22, 2024
jira VULN-5563
cve CVE-2024-39502
commit-author Taehee Yoo <ap420073@gmail.com>
commit 79f18a41dd056115d685f3b0a419c7cd40055e13
upstream-diff There's other modifications in and around this code in the
upstream patch.  Also, the napi_enable from the patch gets placed on the
wrong line. Remove the extra cruft and move the napi_enable() to where
it should be according to the commit.

When queues are started, netif_napi_add() and napi_enable() are called.
If there are 4 queues and only 3 queues are used for the current
configuration, only 3 queues' napi should be registered and enabled.
The ionic_qcq_enable() checks whether the .poll pointer is not NULL for
enabling only the using queue' napi. Unused queues' napi will not be
registered by netif_napi_add(), so the .poll pointer indicates NULL.
But it couldn't distinguish whether the napi was unregistered or not
because netif_napi_del() doesn't reset the .poll pointer to NULL.
So, ionic_qcq_enable() calls napi_enable() for the queue, which was
unregistered by netif_napi_del().

Reproducer:
   ethtool -L <interface name> rx 1 tx 1 combined 0
   ethtool -L <interface name> rx 0 tx 0 combined 1
   ethtool -L <interface name> rx 0 tx 0 combined 4

Splat looks like:
kernel BUG at net/core/dev.c:6666!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
CPU: 3 PID: 1057 Comm: kworker/3:3 Not tainted 6.10.0-rc2+ #16
Workqueue: events ionic_lif_deferred_work [ionic]
RIP: 0010:napi_enable+0x3b/0x40
Code: 48 89 c2 48 83 e2 f6 80 b9 61 09 00 00 00 74 0d 48 83 bf 60 01 00 00 00 74 03 80 ce 01 f0 4f
RSP: 0018:ffffb6ed83227d48 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff97560cda0828 RCX: 0000000000000029
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff97560cda0a28
RBP: ffffb6ed83227d50 R08: 0000000000000400 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
R13: ffff97560ce3c1a0 R14: 0000000000000000 R15: ffff975613ba0a20
FS:  0000000000000000(0000) GS:ffff975d5f780000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f734ee200 CR3: 0000000103e50000 CR4: 00000000007506f0
PKRU: 55555554
Call Trace:
 <TASK>
 ? die+0x33/0x90
 ? do_trap+0xd9/0x100
 ? napi_enable+0x3b/0x40
 ? do_error_trap+0x83/0xb0
 ? napi_enable+0x3b/0x40
 ? napi_enable+0x3b/0x40
 ? exc_invalid_op+0x4e/0x70
 ? napi_enable+0x3b/0x40
 ? asm_exc_invalid_op+0x16/0x20
 ? napi_enable+0x3b/0x40
 ionic_qcq_enable+0xb7/0x180 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]
 ionic_start_queues+0xc4/0x290 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]
 ionic_link_status_check+0x11c/0x170 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]
 ionic_lif_deferred_work+0x129/0x280 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8]
 process_one_work+0x145/0x360
 worker_thread+0x2bb/0x3d0
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xcc/0x100
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x2d/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1a/0x30

Fixes: 0f3154e6bcb3 ("ionic: Add Tx and Rx handling")
	Signed-off-by: Taehee Yoo <ap420073@gmail.com>
	Reviewed-by: Brett Creeley <brett.creeley@amd.com>
	Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Link: https://lore.kernel.org/r/20240612060446.1754392-1-ap420073@gmail.com
	Signed-off-by: Jakub Kicinski <kuba@kernel.org>
(cherry picked from commit 79f18a41dd056115d685f3b0a419c7cd40055e13)
	Signed-off-by: Greg Rose <g.v.rose@ciq.com>

Conflicts:
	drivers/net/ethernet/pensando/ionic/ionic_lif.c
jallisonciq pushed a commit that referenced this pull request Jul 14, 2025
jira LE-3262
cve CVE-2025-37785
Rebuild_History Non-Buildable kernel-5.14.0-570.21.1.el9_6
commit-author Acs, Jakub <acsjakub@amazon.de>
commit d5e206778e96e8667d3bde695ad372c296dc9353

Mounting a corrupted filesystem with directory which contains '.' dir
entry with rec_len == block size results in out-of-bounds read (later
on, when the corrupted directory is removed).

ext4_empty_dir() assumes every ext4 directory contains at least '.'
and '..' as directory entries in the first data block. It first loads
the '.' dir entry, performs sanity checks by calling ext4_check_dir_entry()
and then uses its rec_len member to compute the location of '..' dir
entry (in ext4_next_entry). It assumes the '..' dir entry fits into the
same data block.

If the rec_len of '.' is precisely one block (4KB), it slips through the
sanity checks (it is considered the last directory entry in the data
block) and leaves "struct ext4_dir_entry_2 *de" point exactly past the
memory slot allocated to the data block. The following call to
ext4_check_dir_entry() on new value of de then dereferences this pointer
which results in out-of-bounds mem access.

Fix this by extending __ext4_check_dir_entry() to check for '.' dir
entries that reach the end of data block. Make sure to ignore the phony
dir entries for checksum (by checking name_len for non-zero).

Note: This is reported by KASAN as use-after-free in case another
structure was recently freed from the slot past the bound, but it is
really an OOB read.

This issue was found by syzkaller tool.

Call Trace:
[   38.594108] BUG: KASAN: slab-use-after-free in __ext4_check_dir_entry+0x67e/0x710
[   38.594649] Read of size 2 at addr ffff88802b41a004 by task syz-executor/5375
[   38.595158]
[   38.595288] CPU: 0 UID: 0 PID: 5375 Comm: syz-executor Not tainted 6.14.0-rc7 #1
[   38.595298] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   38.595304] Call Trace:
[   38.595308]  <TASK>
[   38.595311]  dump_stack_lvl+0xa7/0xd0
[   38.595325]  print_address_description.constprop.0+0x2c/0x3f0
[   38.595339]  ? __ext4_check_dir_entry+0x67e/0x710
[   38.595349]  print_report+0xaa/0x250
[   38.595359]  ? __ext4_check_dir_entry+0x67e/0x710
[   38.595368]  ? kasan_addr_to_slab+0x9/0x90
[   38.595378]  kasan_report+0xab/0xe0
[   38.595389]  ? __ext4_check_dir_entry+0x67e/0x710
[   38.595400]  __ext4_check_dir_entry+0x67e/0x710
[   38.595410]  ext4_empty_dir+0x465/0x990
[   38.595421]  ? __pfx_ext4_empty_dir+0x10/0x10
[   38.595432]  ext4_rmdir.part.0+0x29a/0xd10
[   38.595441]  ? __dquot_initialize+0x2a7/0xbf0
[   38.595455]  ? __pfx_ext4_rmdir.part.0+0x10/0x10
[   38.595464]  ? __pfx___dquot_initialize+0x10/0x10
[   38.595478]  ? down_write+0xdb/0x140
[   38.595487]  ? __pfx_down_write+0x10/0x10
[   38.595497]  ext4_rmdir+0xee/0x140
[   38.595506]  vfs_rmdir+0x209/0x670
[   38.595517]  ? lookup_one_qstr_excl+0x3b/0x190
[   38.595529]  do_rmdir+0x363/0x3c0
[   38.595537]  ? __pfx_do_rmdir+0x10/0x10
[   38.595544]  ? strncpy_from_user+0x1ff/0x2e0
[   38.595561]  __x64_sys_unlinkat+0xf0/0x130
[   38.595570]  do_syscall_64+0x5b/0x180
[   38.595583]  entry_SYSCALL_64_after_hwframe+0x76/0x7e

Fixes: ac27a0ec112a0 ("[PATCH] ext4: initial copy of files from ext3")
	Signed-off-by: Jakub Acs <acsjakub@amazon.de>
	Cc: Theodore Ts'o <tytso@mit.edu>
	Cc: Andreas Dilger <adilger.kernel@dilger.ca>
	Cc: linux-ext4@vger.kernel.org
	Cc: linux-kernel@vger.kernel.org
	Cc: Mahmoud Adam <mngyadam@amazon.com>
	Cc: stable@vger.kernel.org
	Cc: security@kernel.org
Link: https://patch.msgid.link/b3ae36a6794c4a01944c7d70b403db5b@amazon.de
	Signed-off-by: Theodore Ts'o <tytso@mit.edu>
(cherry picked from commit d5e206778e96e8667d3bde695ad372c296dc9353)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>
jallisonciq pushed a commit that referenced this pull request Jul 14, 2025
jira LE-3262
cve CVE-2025-22055
Rebuild_History Non-Buildable kernel-5.14.0-570.21.1.el9_6
commit-author Lin Ma <linma@zju.edu.cn>
commit b27055a08ad4b415dcf15b63034f9cb236f7fb40

struct geneve_opt uses 5 bit length for each single option, which
means every vary size option should be smaller than 128 bytes.

However, all current related Netlink policies cannot promise this
length condition and the attacker can exploit a exact 128-byte size
option to *fake* a zero length option and confuse the parsing logic,
further achieve heap out-of-bounds read.

One example crash log is like below:

[    3.905425] ==================================================================
[    3.905925] BUG: KASAN: slab-out-of-bounds in nla_put+0xa9/0xe0
[    3.906255] Read of size 124 at addr ffff888005f291cc by task poc/177
[    3.906646]
[    3.906775] CPU: 0 PID: 177 Comm: poc-oob-read Not tainted 6.1.132 #1
[    3.907131] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
[    3.907784] Call Trace:
[    3.907925]  <TASK>
[    3.908048]  dump_stack_lvl+0x44/0x5c
[    3.908258]  print_report+0x184/0x4be
[    3.909151]  kasan_report+0xc5/0x100
[    3.909539]  kasan_check_range+0xf3/0x1a0
[    3.909794]  memcpy+0x1f/0x60
[    3.909968]  nla_put+0xa9/0xe0
[    3.910147]  tunnel_key_dump+0x945/0xba0
[    3.911536]  tcf_action_dump_1+0x1c1/0x340
[    3.912436]  tcf_action_dump+0x101/0x180
[    3.912689]  tcf_exts_dump+0x164/0x1e0
[    3.912905]  fw_dump+0x18b/0x2d0
[    3.913483]  tcf_fill_node+0x2ee/0x460
[    3.914778]  tfilter_notify+0xf4/0x180
[    3.915208]  tc_new_tfilter+0xd51/0x10d0
[    3.918615]  rtnetlink_rcv_msg+0x4a2/0x560
[    3.919118]  netlink_rcv_skb+0xcd/0x200
[    3.919787]  netlink_unicast+0x395/0x530
[    3.921032]  netlink_sendmsg+0x3d0/0x6d0
[    3.921987]  __sock_sendmsg+0x99/0xa0
[    3.922220]  __sys_sendto+0x1b7/0x240
[    3.922682]  __x64_sys_sendto+0x72/0x90
[    3.922906]  do_syscall_64+0x5e/0x90
[    3.923814]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[    3.924122] RIP: 0033:0x7e83eab84407
[    3.924331] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 faf
[    3.925330] RSP: 002b:00007ffff505e370 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[    3.925752] RAX: ffffffffffffffda RBX: 00007e83eaafa740 RCX: 00007e83eab84407
[    3.926173] RDX: 00000000000001a8 RSI: 00007ffff505e3c0 RDI: 0000000000000003
[    3.926587] RBP: 00007ffff505f460 R08: 00007e83eace1000 R09: 000000000000000c
[    3.926977] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffff505f3c0
[    3.927367] R13: 00007ffff505f5c8 R14: 00007e83ead1b000 R15: 00005d4fbbe6dcb8

Fix these issues by enforing correct length condition in related
policies.

Fixes: 925d844696d9 ("netfilter: nft_tunnel: add support for geneve opts")
Fixes: 4ece47787077 ("lwtunnel: add options setting and dumping for geneve")
Fixes: 0ed5269f9e41 ("net/sched: add tunnel option support to act_tunnel_key")
Fixes: 0a6e77784f49 ("net/sched: allow flower to match tunnel options")
	Signed-off-by: Lin Ma <linma@zju.edu.cn>
	Reviewed-by: Xin Long <lucien.xin@gmail.com>
	Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Link: https://patch.msgid.link/20250402165632.6958-1-linma@zju.edu.cn
	Signed-off-by: Jakub Kicinski <kuba@kernel.org>
(cherry picked from commit b27055a08ad4b415dcf15b63034f9cb236f7fb40)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>
jallisonciq pushed a commit that referenced this pull request Jul 14, 2025
jira LE-3262
cve CVE-2025-37750
Rebuild_History Non-Buildable kernel-5.14.0-570.22.1.el9_6
commit-author Paulo Alcantara <pc@manguebit.com>
commit 9502dd5c7029902f4a425bf959917a5a9e7c0e50

After commit f7025d861694 ("smb: client: allocate crypto only for
primary server") and commit b0abcd65ec54 ("smb: client: fix UAF in
async decryption"), the channels started reusing AEAD TFM from primary
channel to perform synchronous decryption, but that can't done as
there could be multiple cifsd threads (one per channel) simultaneously
accessing it to perform decryption.

This fixes the following KASAN splat when running fstest generic/249
with 'vers=3.1.1,multichannel,max_channels=4,seal' against Windows
Server 2022:

BUG: KASAN: slab-use-after-free in gf128mul_4k_lle+0xba/0x110
Read of size 8 at addr ffff8881046c18a0 by task cifsd/986
CPU: 3 UID: 0 PID: 986 Comm: cifsd Not tainted 6.15.0-rc1 #1
PREEMPT(voluntary)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-3.fc41
04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x5d/0x80
 print_report+0x156/0x528
 ? gf128mul_4k_lle+0xba/0x110
 ? __virt_addr_valid+0x145/0x300
 ? __phys_addr+0x46/0x90
 ? gf128mul_4k_lle+0xba/0x110
 kasan_report+0xdf/0x1a0
 ? gf128mul_4k_lle+0xba/0x110
 gf128mul_4k_lle+0xba/0x110
 ghash_update+0x189/0x210
 shash_ahash_update+0x295/0x370
 ? __pfx_shash_ahash_update+0x10/0x10
 ? __pfx_shash_ahash_update+0x10/0x10
 ? __pfx_extract_iter_to_sg+0x10/0x10
 ? ___kmalloc_large_node+0x10e/0x180
 ? __asan_memset+0x23/0x50
 crypto_ahash_update+0x3c/0xc0
 gcm_hash_assoc_remain_continue+0x93/0xc0
 crypt_message+0xe09/0xec0 [cifs]
 ? __pfx_crypt_message+0x10/0x10 [cifs]
 ? _raw_spin_unlock+0x23/0x40
 ? __pfx_cifs_readv_from_socket+0x10/0x10 [cifs]
 decrypt_raw_data+0x229/0x380 [cifs]
 ? __pfx_decrypt_raw_data+0x10/0x10 [cifs]
 ? __pfx_cifs_read_iter_from_socket+0x10/0x10 [cifs]
 smb3_receive_transform+0x837/0xc80 [cifs]
 ? __pfx_smb3_receive_transform+0x10/0x10 [cifs]
 ? __pfx___might_resched+0x10/0x10
 ? __pfx_smb3_is_transform_hdr+0x10/0x10 [cifs]
 cifs_demultiplex_thread+0x692/0x1570 [cifs]
 ? __pfx_cifs_demultiplex_thread+0x10/0x10 [cifs]
 ? rcu_is_watching+0x20/0x50
 ? rcu_lockdep_current_cpu_online+0x62/0xb0
 ? find_held_lock+0x32/0x90
 ? kvm_sched_clock_read+0x11/0x20
 ? local_clock_noinstr+0xd/0xd0
 ? trace_irq_enable.constprop.0+0xa8/0xe0
 ? __pfx_cifs_demultiplex_thread+0x10/0x10 [cifs]
 kthread+0x1fe/0x380
 ? kthread+0x10f/0x380
 ? __pfx_kthread+0x10/0x10
 ? local_clock_noinstr+0xd/0xd0
 ? ret_from_fork+0x1b/0x60
 ? local_clock+0x15/0x30
 ? lock_release+0x29b/0x390
 ? rcu_is_watching+0x20/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x31/0x60
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1a/0x30
 </TASK>

	Tested-by: David Howells <dhowells@redhat.com>
	Reported-by: Steve French <stfrench@microsoft.com>
Closes: https://lore.kernel.org/r/CAH2r5mu6Yc0-RJXM3kFyBYUB09XmXBrNodOiCVR4EDrmxq5Szg@mail.gmail.com
Fixes: f7025d861694 ("smb: client: allocate crypto only for primary server")
Fixes: b0abcd65ec54 ("smb: client: fix UAF in async decryption")
	Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
	Signed-off-by: Steve French <stfrench@microsoft.com>
(cherry picked from commit 9502dd5c7029902f4a425bf959917a5a9e7c0e50)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>
jallisonciq pushed a commit that referenced this pull request Jul 14, 2025
jira LE-3262
cve CVE-2025-21999
Rebuild_History Non-Buildable kernel-5.14.0-570.22.1.el9_6
commit-author Ye Bin <yebin10@huawei.com>
commit 654b33ada4ab5e926cd9c570196fefa7bec7c1df
Empty-Commit: Cherry-Pick Conflicts during history rebuild.
Will be included in final tarball splat. Ref for failed cherry-pick at:
ciq/ciq_backports/kernel-5.14.0-570.22.1.el9_6/654b33ad.failed

Fix race between rmmod and /proc/XXX's inode instantiation.

The bug is that pde->proc_ops don't belong to /proc, it belongs to a
module, therefore dereferencing it after /proc entry has been registered
is a bug unless use_pde/unuse_pde() pair has been used.

use_pde/unuse_pde can be avoided (2 atomic ops!) because pde->proc_ops
never changes so information necessary for inode instantiation can be
saved _before_ proc_register() in PDE itself and used later, avoiding
pde->proc_ops->...  dereference.

      rmmod                         lookup
sys_delete_module
                         proc_lookup_de
			   pde_get(de);
			   proc_get_inode(dir->i_sb, de);
  mod->exit()
    proc_remove
      remove_proc_subtree
       proc_entry_rundown(de);
  free_module(mod);

                               if (S_ISREG(inode->i_mode))
	                         if (de->proc_ops->proc_read_iter)
                           --> As module is already freed, will trigger UAF

BUG: unable to handle page fault for address: fffffbfff80a702b
PGD 817fc4067 P4D 817fc4067 PUD 817fc0067 PMD 102ef4067 PTE 0
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 26 UID: 0 PID: 2667 Comm: ls Tainted: G
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
RIP: 0010:proc_get_inode+0x302/0x6e0
RSP: 0018:ffff88811c837998 EFLAGS: 00010a06
RAX: dffffc0000000000 RBX: ffffffffc0538140 RCX: 0000000000000007
RDX: 1ffffffff80a702b RSI: 0000000000000001 RDI: ffffffffc0538158
RBP: ffff8881299a6000 R08: 0000000067bbe1e5 R09: 1ffff11023906f20
R10: ffffffffb560ca07 R11: ffffffffb2b43a58 R12: ffff888105bb78f0
R13: ffff888100518048 R14: ffff8881299a6004 R15: 0000000000000001
FS:  00007f95b9686840(0000) GS:ffff8883af100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff80a702b CR3: 0000000117dd2000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 proc_lookup_de+0x11f/0x2e0
 __lookup_slow+0x188/0x350
 walk_component+0x2ab/0x4f0
 path_lookupat+0x120/0x660
 filename_lookup+0x1ce/0x560
 vfs_statx+0xac/0x150
 __do_sys_newstat+0x96/0x110
 do_syscall_64+0x5f/0x170
 entry_SYSCALL_64_after_hwframe+0x76/0x7e

[adobriyan@gmail.com: don't do 2 atomic ops on the common path]
Link: https://lkml.kernel.org/r/3d25ded0-1739-447e-812b-e34da7990dcf@p183
Fixes: 778f3dd5a13c ("Fix procfs compat_ioctl regression")
	Signed-off-by: Ye Bin <yebin10@huawei.com>
	Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
	Cc: Al Viro <viro@zeniv.linux.org.uk>
	Cc: David S. Miller <davem@davemloft.net>
	Cc: <stable@vger.kernel.org>
	Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 654b33ada4ab5e926cd9c570196fefa7bec7c1df)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>

# Conflicts:
#	fs/proc/internal.h
jallisonciq pushed a commit that referenced this pull request Jul 14, 2025
jira LE-3262
Rebuild_History Non-Buildable kernel-5.14.0-570.22.1.el9_6
commit-author Baolin Wang <baolin.wang@linux.alibaba.com>
commit 9bcef5973e31020e5aa8571eb994d67b77318356

When running autonuma with enabling multi-size THP, I encountered the
following kernel crash issue:

[  134.290216] list_del corruption. prev->next should be fffff9ad42e1c490,
but was dead000000000100. (prev=fffff9ad42399890)
[  134.290877] kernel BUG at lib/list_debug.c:62!
[  134.291052] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[  134.291210] CPU: 56 PID: 8037 Comm: numa01 Kdump: loaded Tainted:
G            E      6.7.0-rc4+ #20
[  134.291649] RIP: 0010:__list_del_entry_valid_or_report+0x97/0xb0
......
[  134.294252] Call Trace:
[  134.294362]  <TASK>
[  134.294440]  ? die+0x33/0x90
[  134.294561]  ? do_trap+0xe0/0x110
......
[  134.295681]  ? __list_del_entry_valid_or_report+0x97/0xb0
[  134.295842]  folio_undo_large_rmappable+0x99/0x100
[  134.296003]  destroy_large_folio+0x68/0x70
[  134.296172]  migrate_folio_move+0x12e/0x260
[  134.296264]  ? __pfx_remove_migration_pte+0x10/0x10
[  134.296389]  migrate_pages_batch+0x495/0x6b0
[  134.296523]  migrate_pages+0x1d0/0x500
[  134.296646]  ? __pfx_alloc_misplaced_dst_folio+0x10/0x10
[  134.296799]  migrate_misplaced_folio+0x12d/0x2b0
[  134.296953]  do_numa_page+0x1f4/0x570
[  134.297121]  __handle_mm_fault+0x2b0/0x6c0
[  134.297254]  handle_mm_fault+0x107/0x270
[  134.300897]  do_user_addr_fault+0x167/0x680
[  134.304561]  exc_page_fault+0x65/0x140
[  134.307919]  asm_exc_page_fault+0x22/0x30

The reason for the crash is that, the commit 85ce2c517ade ("memcontrol:
only transfer the memcg data for migration") removed the charging and
uncharging operations of the migration folios and cleared the memcg data
of the old folio.

During the subsequent release process of the old large folio in
destroy_large_folio(), if the large folio needs to be removed from the
split queue, an incorrect split queue can be obtained (which is
pgdat->deferred_split_queue) because the old folio's memcg is NULL now.
This can lead to list operations being performed under the wrong split
queue lock protection, resulting in a list crash as above.

After the migration, the old folio is going to be freed, so we can remove
it from the split queue in mem_cgroup_migrate() a bit earlier before
clearing the memcg data to avoid getting incorrect split queue.

[akpm@linux-foundation.org: fix comment, per Zi Yan]
Link: https://lkml.kernel.org/r/61273e5e9b490682388377c20f52d19de4a80460.1703054559.git.baolin.wang@linux.alibaba.com
Fixes: 85ce2c517ade ("memcontrol: only transfer the memcg data for migration")
	Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
	Reviewed-by: Nhat Pham <nphamcs@gmail.com>
	Reviewed-by: Yang Shi <shy828301@gmail.com>
	Reviewed-by: Zi Yan <ziy@nvidia.com>
	Cc: David Hildenbrand <david@redhat.com>
	Cc: "Huang, Ying" <ying.huang@intel.com>
	Cc: Johannes Weiner <hannes@cmpxchg.org>
	Cc: Michal Hocko <mhocko@kernel.org>
	Cc: Muchun Song <muchun.song@linux.dev>
	Cc: Roman Gushchin <roman.gushchin@linux.dev>
	Cc: Shakeel Butt <shakeelb@google.com>
	Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 9bcef5973e31020e5aa8571eb994d67b77318356)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>
jallisonciq pushed a commit that referenced this pull request Jul 14, 2025
…b folio

jira LE-3262
Rebuild_History Non-Buildable kernel-5.14.0-570.22.1.el9_6
commit-author Miaohe Lin <linmiaohe@huawei.com>
commit f708f6970cc9d6bac71da45c129482092e710537

A kernel crash was observed when migrating hugetlb folio:

BUG: kernel NULL pointer dereference, address: 0000000000000008
PGD 0 P4D 0
Oops: Oops: 0002 [#1] PREEMPT SMP NOPTI
CPU: 0 PID: 3435 Comm: bash Not tainted 6.10.0-rc6-00450-g8578ca01f21f #66
RIP: 0010:__folio_undo_large_rmappable+0x70/0xb0
RSP: 0018:ffffb165c98a7b38 EFLAGS: 00000097
RAX: fffffbbc44528090 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffa30e000a2800 RSI: 0000000000000246 RDI: ffffa3153ffffcc0
RBP: fffffbbc44528000 R08: 0000000000002371 R09: ffffffffbe4e5868
R10: 0000000000000001 R11: 0000000000000001 R12: ffffa3153ffffcc0
R13: fffffbbc44468000 R14: 0000000000000001 R15: 0000000000000001
FS:  00007f5b3a716740(0000) GS:ffffa3151fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 000000010959a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __folio_migrate_mapping+0x59e/0x950
 __migrate_folio.constprop.0+0x5f/0x120
 move_to_new_folio+0xfd/0x250
 migrate_pages+0x383/0xd70
 soft_offline_page+0x2ab/0x7f0
 soft_offline_page_store+0x52/0x90
 kernfs_fop_write_iter+0x12c/0x1d0
 vfs_write+0x380/0x540
 ksys_write+0x64/0xe0
 do_syscall_64+0xb9/0x1d0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5b3a514887
RSP: 002b:00007ffe138fce68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007f5b3a514887
RDX: 000000000000000c RSI: 0000556ab809ee10 RDI: 0000000000000001
RBP: 0000556ab809ee10 R08: 00007f5b3a5d1460 R09: 000000007fffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c
R13: 00007f5b3a61b780 R14: 00007f5b3a617600 R15: 00007f5b3a616a00

It's because hugetlb folio is passed to __folio_undo_large_rmappable()
unexpectedly.  large_rmappable flag is imperceptibly set to hugetlb folio
since commit f6a8dd98a2ce ("hugetlb: convert alloc_buddy_hugetlb_folio to
use a folio").  Then commit be9581ea8c05 ("mm: fix crashes from deferred
split racing folio migration") makes folio_migrate_mapping() call
folio_undo_large_rmappable() triggering the bug.  Fix this issue by
clearing large_rmappable flag for hugetlb folios.  They don't need that
flag set anyway.

Link: https://lkml.kernel.org/r/20240709120433.4136700-1-linmiaohe@huawei.com
Fixes: f6a8dd98a2ce ("hugetlb: convert alloc_buddy_hugetlb_folio to use a folio")
Fixes: be9581ea8c05 ("mm: fix crashes from deferred split racing folio migration")
	Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
	Cc: Hugh Dickins <hughd@google.com>
	Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
	Cc: Muchun Song <muchun.song@linux.dev>
	Cc: <stable@vger.kernel.org>
	Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit f708f6970cc9d6bac71da45c129482092e710537)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>
jallisonciq pushed a commit that referenced this pull request Jul 14, 2025
jira LE-3262
cve CVE-2025-21969
Rebuild_History Non-Buildable kernel-5.14.0-570.22.1.el9_6
commit-author Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
commit ab4eedb790cae44313759b50fe47da285e2519d5

This fixes the following trace by reworking the locking of l2cap_conn
so instead of only locking when changing the chan_l list this promotes
chan_lock to a general lock of l2cap_conn so whenever it is being held
it would prevents the likes of l2cap_conn_del to run:

list_del corruption, ffff888021297e00->prev is LIST_POISON2 (dead000000000122)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 5896 Comm: syz-executor213 Not tainted 6.14.0-rc1-next-20250204-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__list_del_entry_valid_or_report+0x12c/0x190 lib/list_debug.c:59
Code: 8c 4c 89 fe 48 89 da e8 32 8c 37 fc 90 0f 0b 48 89 df e8 27 9f 14 fd 48 c7 c7 a0 c0 60 8c 4c 89 fe 48 89 da e8 15 8c 37 fc 90 <0f> 0b 4c 89 e7 e8 0a 9f 14 fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 cb
RSP: 0018:ffffc90003f6f998 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: 01454d423f7fbf00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff819f077c R09: 1ffff920007eded0
R10: dffffc0000000000 R11: fffff520007eded1 R12: dead000000000122
R13: dffffc0000000000 R14: ffff8880352248d8 R15: ffff888021297e00
FS:  00007f7ace6686c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7aceeeb1d0 CR3: 000000003527c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del_rcu include/linux/rculist.h:168 [inline]
 hci_chan_del+0x70/0x1b0 net/bluetooth/hci_conn.c:2858
 l2cap_conn_free net/bluetooth/l2cap_core.c:1816 [inline]
 kref_put include/linux/kref.h:65 [inline]
 l2cap_conn_put+0x70/0xe0 net/bluetooth/l2cap_core.c:1830
 l2cap_sock_shutdown+0xa8a/0x1020 net/bluetooth/l2cap_sock.c:1377
 l2cap_sock_release+0x79/0x1d0 net/bluetooth/l2cap_sock.c:1416
 __sock_release net/socket.c:642 [inline]
 sock_close+0xbc/0x240 net/socket.c:1393
 __fput+0x3e9/0x9f0 fs/file_table.c:448
 task_work_run+0x24f/0x310 kernel/task_work.c:227
 ptrace_notify+0x2d2/0x380 kernel/signal.c:2522
 ptrace_report_syscall include/linux/ptrace.h:415 [inline]
 ptrace_report_syscall_exit include/linux/ptrace.h:477 [inline]
 syscall_exit_work+0xc7/0x1d0 kernel/entry/common.c:173
 syscall_exit_to_user_mode_prepare kernel/entry/common.c:200 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:205 [inline]
 syscall_exit_to_user_mode+0x24a/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7aceeaf449
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7ace668218 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 00007f7acef39328 RCX: 00007f7aceeaf449
RDX: 000000000000000e RSI: 0000000020000100 RDI: 0000000000000004
RBP: 00007f7acef39320 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000004 R14: 00007f7ace668670 R15: 000000000000000b
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x12c/0x190 lib/list_debug.c:59
Code: 8c 4c 89 fe 48 89 da e8 32 8c 37 fc 90 0f 0b 48 89 df e8 27 9f 14 fd 48 c7 c7 a0 c0 60 8c 4c 89 fe 48 89 da e8 15 8c 37 fc 90 <0f> 0b 4c 89 e7 e8 0a 9f 14 fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 cb
RSP: 0018:ffffc90003f6f998 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: 01454d423f7fbf00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff819f077c R09: 1ffff920007eded0
R10: dffffc0000000000 R11: fffff520007eded1 R12: dead000000000122
R13: dffffc0000000000 R14: ffff8880352248d8 R15: ffff888021297e00
FS:  00007f7ace6686c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7acef05b08 CR3: 000000003527c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

	Reported-by: syzbot+10bd8fe6741eedd2be2e@syzkaller.appspotmail.com
	Tested-by: syzbot+10bd8fe6741eedd2be2e@syzkaller.appspotmail.com
Fixes: b4f82f9ed43a ("Bluetooth: L2CAP: Fix slab-use-after-free Read in l2cap_send_cmd")
	Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
	Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
(cherry picked from commit ab4eedb790cae44313759b50fe47da285e2519d5)
	Signed-off-by: Jonathan Maple <jmaple@ciq.com>
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4 participants