af_unix: Return immediately when manage_oob() returns NULL for 0-length buffer.

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98394
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-14 14:17:50 UTC
Updated2026-10-19 10:18:42 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: af_unix: Return immediately when manage_oob() returns NULL for 0-length buffer. Fahad Alharbi reported that recv(0, MSG_PEEK) triggers busy-wait in unix_stream_read_generic() if recv() is blocking and the last skb in the queue is MSG_OOB skb. In such a situation, TCP returns 0 immediately regardless of blocking or non-blocking. Let's follow the behaviour.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 314001f0bf927015e459c9d387d62a231fe93af3 3d3c7a3df66b2ca3d2cd1a2a0c37eb701feba713 git Not specified
CNA Linux Linux affected 314001f0bf927015e459c9d387d62a231fe93af3 d5dd55b316ca229a4cbf11729483ba5bb57233e7 git Not specified
CNA Linux Linux affected 314001f0bf927015e459c9d387d62a231fe93af3 c81c5be3826c8467945b964d0cf7f7b3d65461db git Not specified
CNA Linux Linux affected 314001f0bf927015e459c9d387d62a231fe93af3 6e5ee08eb5858d175da6768d75d163817b6a9d4a git Not specified
CNA Linux Linux affected 5.15 Not specified
CNA Linux Linux unaffected 5.15 semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.7 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d5dd55b316ca229a4cbf11729483ba5bb57233e7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6e5ee08eb5858d175da6768d75d163817b6a9d4a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c81c5be3826c8467945b964d0cf7f7b3d65461db 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3d3c7a3df66b2ca3d2cd1a2a0c37eb701feba713 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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