af_unix: Set gc_in_progress to true in unix_gc().

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Summary

CVECVE-2026-53361
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-04 12:17:02 UTC
Updated2026-07-04 12:17:02 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: af_unix: Set gc_in_progress to true in unix_gc(). Igor Ushakov reported that unix_gc() could run with gc_in_progress being false if the work is scheduled while running: Thread 1 Thread 2 Thread 3 -------- -------- -------- unix_schedule_gc() unix_schedule_gc() `- if (!gc_in_progress) `- if (!gc_in_progress) |- gc_in_progress = true | `- queue_work() | unix_gc() <----------------/ | | |- gc_in_progress = true ... `- queue_work() | | `- gc_in_progress = false | | unix_gc() <---------------------------------------------' | ... /* gc_in_progress == false */ | `- gc_in_progress = false unix_peek_fpl() relies on gc_in_progress not to confuse GC by MSG_PEEK. Let's set gc_in_progress to true in unix_gc().

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 328840c93bd6a4871dd10908d01b41eab83eb8e2 82c17e13d404f686e164590483fd6c1abaa675d0 git Not specified
CNA Linux Linux affected 8b90a9f819dc2a06baae4ec1a64d875e53b824ec 591f1ac217428a6d2b32a8ac14aac0fab44f155a git Not specified
CNA Linux Linux affected 8b90a9f819dc2a06baae4ec1a64d875e53b824ec 0cfa78c050662784fc8e3ab26dbfd1dc632b2082 git Not specified
CNA Linux Linux affected 8b90a9f819dc2a06baae4ec1a64d875e53b824ec d82ba05263c69fa2437fe93e4e561cc40f4c03af git Not specified
CNA Linux Linux affected ceb8bd6c69c1680fd9b45e7f16d7170c9c7513a5 git Not specified
CNA Linux Linux affected 6.6.93 6.6.144 semver Not specified
CNA Linux Linux affected 6.1.141 6.2 semver Not specified
CNA Linux Linux affected 6.9 Not specified
CNA Linux Linux unaffected 6.9 semver Not specified
CNA Linux Linux unaffected 6.6.144 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.95 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.38 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/0cfa78c050662784fc8e3ab26dbfd1dc632b2082 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d82ba05263c69fa2437fe93e4e561cc40f4c03af 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/82c17e13d404f686e164590483fd6c1abaa675d0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/591f1ac217428a6d2b32a8ac14aac0fab44f155a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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