CVE-2026-52928
Estado: AnalizadaMedia (5.5)—
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.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.11%
- Percentil entre todas las CVEs puntuadas: 1
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/3147ddf5a41c20c45c2eb69e00b62f10f822056a
- https://git.kernel.org/stable/c/645b1ed3259af38b7814242a420bc2081bdd1eb6
- https://git.kernel.org/stable/c/b741c9c6ef59f17c1f104ddf1217ef77f79ed29b
- https://git.kernel.org/stable/c/c34c41446acf6c0d13b5b06c809be11e0f7f2729
- https://git.kernel.org/stable/c/d119775f2bad827edc28071c061fdd4a91f889a5
- https://git.kernel.org/stable/c/ec123873fdc83e7244c8ed6d17b8f8ea6c416a67
- https://git.kernel.org/stable/c/f085971de6d6b8ef946a5e0bcd73ff24509a0f85
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Reject SIOCATMARK on non-stream sockets\n\nSIOCATMARK reports whether the receive queue is at the urgent mark for\nMSG_OOB.\n\nIn AF_UNIX, MSG_OOB is supported only for SOCK_STREAM sockets.\nSOCK_DGRAM and SOCK_SEQPACKET reject MSG_OOB in sendmsg() and recvmsg(),\nso they should not support SIOCATMARK either.\n\nReturn -EOPNOTSUPP for non-stream sockets before checking the receive\nqueue."
}
],
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