Threats Tagged 'cve-2026-52928'
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Threats Tagged 'cve-2026-52928'
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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. Join the discussion | GCVE Database | 06/24/2026, 09:30:48 UTC Added: 06/29/2026, 22:11:16 UTC |
A vulnerability in the Linux kernel's AF_UNIX socket implementation was resolved, specifically rejecting the SIOCATMARK ioctl on non-stream sockets. The SIOCATMARK ioctl is intended to report whether the receive queue is at the urgent mark for MSG_OOB, which is only supported on SOCK_STREAM sockets. Non-stream sockets like SOCK_DGRAM and SOCK_SEQPACKET do not support MSG_OOB and thus should not support SIOCATMARK. The fix returns an error for non-stream sockets before checking the receive queue. This issue was addressed in Linux kernel updates for various Ubuntu HWE edge versions. Join the discussion | GCVE Database | 06/24/2026, 08:16:00 UTC Added: 07/17/2026, 10:18:29 UTC |
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