Riskcovery

CVE-2026-98394

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

State
Published
Severity
Not scored
Published
Oct 14, 2026
Updated
Oct 19, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

In 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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 314001f0bf927015e459c9d387d62a231fe93af3 to before 3d3c7a3df66b2ca3d2cd1a2a0c37eb701feba713Affected
  • 314001f0bf927015e459c9d387d62a231fe93af3 to before d5dd55b316ca229a4cbf11729483ba5bb57233e7Affected
  • 314001f0bf927015e459c9d387d62a231fe93af3 to before c81c5be3826c8467945b964d0cf7f7b3d65461dbAffected
  • 314001f0bf927015e459c9d387d62a231fe93af3 to before 6e5ee08eb5858d175da6768d75d163817b6a9d4aAffected
LinuxLinux
  • 5.15Affected
  • before 5.15Not affected
  • 6.12.111 through 6.12.*Not affected
  • 6.18.53 through 6.18.*Not affected
  • 7.2.7 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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