CVE-2026-52928 - af_unix: Reject SIOCATMARK on non-stream sockets

CVE-2026-52928 - af_unix: Reject SIOCATMARK on non-stream sockets

https://cvefeed.io/rssfeed/latest.atom / Wed, 06/24/2026 - 13:01
CVE ID :CVE-2026-52928
Published : June 24, 2026, 7:14 a.m. | 2 hours, 26 minutes ago
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.
Severity: 0.0 | NA
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