CVE-2026-52928 | In the Linux kernel, the following vulnerability has been re…

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.

Metadata

CVE ID: CVE-2026-52928
State: PUBLISHED
Assigner: Linux
Reserved: 2026-06-09 07:44 UTC
Published: 2026-06-24 07:14 UTC
Last updated: 2026-06-24 07:14 UTC
Vendor / Product: Linux / Linux
Sources: cve.org · NVD

Severity & Metrics

No CVSS data available.

Affected products (2)

Vendor	Product	Platform	Versions
Linux	Linux	—	314001f0bf927015e459c9d387d62a231fe93af3 < 645b1ed3259af38b7814242a420bc2081bdd1eb6, 314001f0bf927015e459c9d387d62a231fe93af3 < c34c41446acf6c0d13b5b06c809be11e0f7f2729, 314001f0bf927015e459c9d387d62a231fe93af3 < 3147ddf5a41c20c45c2eb69e00b62f10f822056a, 314001f0bf927015e459c9d387d62a231fe93af3 < d119775f2bad827edc28071c061fdd4a91f889a5
Linux	Linux	—	5.15, 0 < 5.15, 6.12.88 ≤ 6.12., 6.18.30 ≤ 6.18. …

References (4)