CVE-2026-52928

Published: Jun 24, 2026Modified: Oct 15, 2026

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability: 1.8 / Impact: 3.6

Source: NVD

Description

In the Linux kernel, the following vulnerability has been resolved: af_unix: Reject SIOCATMARK on non-stream sockets SIOCATMARK reports whether the receive queue is at the urgent mark for MSG_OOB. In AF_UNIX, MSG_OOB is supported only for SOCK_STREAM sockets. SOCK_DGRAM and SOCK_SEQPACKET reject MSG_OOB in sendmsg() and recvmsg(), so they should not support SIOCATMARK either. Return -EOPNOTSUPP for non-stream sockets before checking the receive queue.

Affected (8)

Products: Linux: Linux Kernel

Linux

1 product

Linux Kernel

Configuration A

8 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	5.15 ≤ version < 5.15.211
Linux Linux Kernel	5.16 ≤ version < 6.1.177
Linux Linux Kernel	6.13 ≤ version < 6.18.30
Linux Linux Kernel	6.19 ≤ version < 7.0.7
Linux Linux Kernel	6.2 ≤ version < 6.6.144
Linux Linux Kernel	6.7 ≤ version < 6.12.88
Linux Linux Kernel	Version 7.1 rc1
Linux Linux Kernel	Version 7.1 rc2