MEDIUM

CVE-2026-52928

Linux Linux Kernel 2026-06-24 CVSS v3.1

CVSS

5.5

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.

EPSS Score

0.11%

Probability of exploitation in next 30 days

1.7th percentile

References

https://git.kernel.org/stable/c/3147ddf5a41c20c45c2eb69e00b62f10f822056a Patch https://git.kernel.org/stable/c/645b1ed3259af38b7814242a420bc2081bdd1eb6 Patch https://git.kernel.org/stable/c/b741c9c6ef59f17c1f104ddf1217ef77f79ed29b Patch https://git.kernel.org/stable/c/c34c41446acf6c0d13b5b06c809be11e0f7f2729 Patch https://git.kernel.org/stable/c/d119775f2bad827edc28071c061fdd4a91f889a5 Patch https://git.kernel.org/stable/c/ec123873fdc83e7244c8ed6d17b8f8ea6c416a67 Patch https://git.kernel.org/stable/c/f085971de6d6b8ef946a5e0bcd73ff24509a0f85 Patch

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Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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