CVEvulnerability
CVE-2026-98394
- Status
- Received
- Published
- 2026-10-14
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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.
References
- https://git.kernel.org/stable/c/3d3c7a3df66b2ca3d2cd1a2a0c37eb701feba713 git.kernel.org
- https://git.kernel.org/stable/c/6e5ee08eb5858d175da6768d75d163817b6a9d4a git.kernel.org
- https://git.kernel.org/stable/c/c81c5be3826c8467945b964d0cf7f7b3d65461db git.kernel.org
- https://git.kernel.org/stable/c/d5dd55b316ca229a4cbf11729483ba5bb57233e7 git.kernel.org