fix: co64 could use too much memory of the size overflowed 32 bits

Eyevinn · Jan 20, 2025 · 2330aaa · 2330aaa
1 parent 5fb4e82
commit 2330aaa
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Showing 2 changed files with 3 additions and 1 deletion.
diff --git a/mp4/co64.go b/mp4/co64.go
@@ -59,7 +59,7 @@ func (b *Co64Box) Type() string {
 }
 
 func (b *Co64Box) expectedSize(nrEntries uint32) uint64 {
-	return uint64(boxHeaderSize + 8 + nrEntries*8)
+	return uint64(boxHeaderSize + 8 + uint64(nrEntries)*8)
 }
 
 // Size - box-specific size

diff --git a/mp4/testdata/fuzz/FuzzDecodeBox/7e07cf8cc85e7f41 b/mp4/testdata/fuzz/FuzzDecodeBox/7e07cf8cc85e7f41
@@ -0,0 +1,2 @@
+go test fuzz v1
+[]byte("\x00\x00\x00\x10co640000 \x00\x00\x00")
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		go test fuzz v1
		[]byte("\x00\x00\x00\x10co640000 \x00\x00\x00")