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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-52928

af_unix: Reject SIOCATMARK on non-stream sockets

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 314001f0bf927015e459c9d387d62a231fe93af3 to < ec123873fdc83e7244c8ed6d17b8f8ea6c416a67affected
  • 314001f0bf927015e459c9d387d62a231fe93af3 to < f085971de6d6b8ef946a5e0bcd73ff24509a0f85affected
  • 314001f0bf927015e459c9d387d62a231fe93af3 to < b741c9c6ef59f17c1f104ddf1217ef77f79ed29baffected
  • 314001f0bf927015e459c9d387d62a231fe93af3 to < 645b1ed3259af38b7814242a420bc2081bdd1eb6affected
  • 314001f0bf927015e459c9d387d62a231fe93af3 to < c34c41446acf6c0d13b5b06c809be11e0f7f2729affected
  • 314001f0bf927015e459c9d387d62a231fe93af3 to < 3147ddf5a41c20c45c2eb69e00b62f10f822056aaffected
  • 314001f0bf927015e459c9d387d62a231fe93af3 to < d119775f2bad827edc28071c061fdd4a91f889a5affected

Linux Linux

Default version status: affected

  • 5.15affected
  • 0 to < 5.15unaffected
  • 5.15.211 to ≤ 5.15.*unaffected
  • 6.1.177 to ≤ 6.1.*unaffected
  • 6.6.144 to ≤ 6.6.*unaffected
  • 6.12.88 to ≤ 6.12.*unaffected
  • 6.18.30 to ≤ 6.18.*unaffected
  • 7.0.7 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References