CVE-2026-52928

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the AF UNIX implementation where SIOCATMARK, which reports if the receive queue is at the urgent mark for MSG OOB (Out-of-Band data), is incorrectly supported on non-stream sockets. While MSG OOB is only intended for SOCK STREAM sockets, SOCK DGRAM and SOCK SEQPACKET sockets failed to reject SIOCATMARK requests.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.