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Researchers at VU Amsterdam have released Training Solo, detailing several speculative attacks which bypass current protections. One issue, which Intel has named Indirect Target Selection, is a bug in the hardware support for prediction-domain isolation. The mitigation for this involves both microcode and software changes in Xen. For more details, see: 1. https://vusec.net/projects/training-solo 2. https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/advisory-guidance/indirect-target-selection.html Another issue discussed in the Training Solo paper pertains to classic-BPF. Xen does not have any capability similar to BPF filters, so is not believed to be affected by this issue. Signed-off-by: Fernando Rodrigues <alpha@sigmasquadron.net>
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hehongbo
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The changes look good, an approval from a nixpkgs Xen team member and nixpkgs-review shows no unexpected issue, let's merge.
nixpkgs-review result
Generated using nixpkgs-review.
Command: nixpkgs-review pr 406506
x86_64-linux
⏩ 4 packages marked as broken and skipped:
- htcondor
- python313Packages.guestfs
- python313Packages.guestfs.dist
- qubes-core-vchan-xen
❌ 4 packages failed to build:
- qemu_xen
- qemu_xen.debug
- qemu_xen.doc
- qemu_xen.ga
✅ 57 packages built:
- appvm
- collectd
- diffoscope
- diffoscope.dist
- diffoscope.man
- docker-machine-kvm2
- fdroidserver
- fdroidserver.dist
- gnome-boxes
- libguestfs
- libguestfs.guestfsd
- librenms
- libvirt
- libvirt-glib
- libvirt-glib.dev
- libvirt-glib.devdoc
- libvmi
- libvmi.dev
- libvmi.lib
- mgmt
- minikube
- multipass
- perl538Packages.SysVirt
- perl538Packages.SysVirt.devdoc
- perl540Packages.SysVirt
- perl540Packages.SysVirt.devdoc
- podman-bootc
- prometheus-libvirt-exporter
- python312Packages.guestfs
- python312Packages.guestfs.dist
- python312Packages.libvirt
- python312Packages.libvirt.dist
- xen (python312Packages.xen)
- xen.boot (python312Packages.xen.boot)
- xen.dev (python312Packages.xen.dev)
- xen.doc (python312Packages.xen.doc)
- xen.man (python312Packages.xen.man)
- python313Packages.libvirt
- python313Packages.libvirt.dist
- python313Packages.xen
- python313Packages.xen.boot
- python313Packages.xen.dev
- python313Packages.xen.doc
- python313Packages.xen.man
- rubyPackages.ruby-libvirt (rubyPackages_3_3.ruby-libvirt)
- rubyPackages_3_1.ruby-libvirt
- rubyPackages_3_2.ruby-libvirt
- rubyPackages_3_4.ruby-libvirt
- vagrant
- virt-manager
- virt-manager-qt
- virt-top
- virt-v2v
- virt-viewer
- virtnbdbackup
- virtnbdbackup.dist
- xen-guest-agent
Contributor
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Backport failed for Please cherry-pick the changes locally and resolve any conflicts. git fetch origin release-24.11
git worktree add -d .worktree/backport-406506-to-release-24.11 origin/release-24.11
cd .worktree/backport-406506-to-release-24.11
git switch --create backport-406506-to-release-24.11
git cherry-pick -x c29710d4ad60296481c0702da4790a2250f2a7ed |
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Researchers at VU Amsterdam have released Training Solo, detailing several speculative attacks which bypass current protections.
One issue, which Intel has named Indirect Target Selection, is a bug in the hardware support for prediction-domain isolation. The mitigation for this involves both microcode and software changes in Xen.
For more details, see:
Another issue discussed in the Training Solo paper pertains to classic-BPF. Xen does not have any capability similar to BPF filters, so is not believed to be affected by this issue.
Things done
nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage./result/bin/)Add a 👍 reaction to pull requests you find important.