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.
References (7)
Core 7
Core References
Scores
CVSS v3
5.5
EPSS
0.0011
EPSS Percentile
1.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
Status
published
Products (24)
linux/Kernel
5.15.0 - 5.15.211linux
linux/Kernel
5.16.0 - 6.1.177linux
linux/Kernel
6.13.0 - 6.18.30linux
linux/Kernel
6.19.0 - 7.0.7linux
linux/Kernel
6.2.0 - 6.6.144linux
linux/Kernel
6.7.0 - 6.12.88linux
Linux/Linux
< 5.15
Linux/Linux
314001f0bf927015e459c9d387d62a231fe93af3 - 3147ddf5a41c20c45c2eb69e00b62f10f822056a
Linux/Linux
314001f0bf927015e459c9d387d62a231fe93af3 - 645b1ed3259af38b7814242a420bc2081bdd1eb6
Linux/Linux
314001f0bf927015e459c9d387d62a231fe93af3 - b741c9c6ef59f17c1f104ddf1217ef77f79ed29b
... and 14 more
Published
Jun 24, 2026
Tracked Since
Jun 24, 2026