CVE-2026-52928Medium· 5.5▾ SunlitIn 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 1.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.1%
0.1% → 0.2%
Last analysed / modified upstream
— → 5.5
none → medium
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.
linux_kernel >= 5.15, < 5.15.211linux_kernel >= 5.16, < 6.1.177linux_kernel >= 6.2, < 6.6.144linux_kernel >= 6.7, < 6.12.88linux_kernel >= 6.13, < 6.18.30linux_kernel >= 6.19, < 7.0.7linux_kernel = 7.1Upgrade past the affected range:
linux_kernel 7.0.7Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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