CVE-2025-39964
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg Issuing two writes to the same af_alg socket is bogus as the data will be interleaved in an unpredictable fashion. Furthermore, concurrent writes may create inconsistencies in the internal socket state. Disallow this by adding a new ctx->write field that indiciates exclusive ownership for writing.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-10-13 14:15:34.737000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
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"published": "2025-10-13T14:15:34.737",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: af_alg - Disallow concurrent writes in af_alg_sendmsg\n\nIssuing two writes to the same af_alg socket is bogus as the\ndata will be interleaved in an unpredictable fashion. Furthermore,\nconcurrent writes may create inconsistencies in the internal\nsocket state.\n\nDisallow this by adding a new ctx->write field that indiciates\nexclusive ownership for writing."
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"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncrypto: af_alg - Prohibir escrituras concurrentes en af_alg_sendmsg\n\nRealizar dos escrituras al mismo socket af_alg es erróneo ya que los datos se entrelazarán de manera impredecible. Además, las escrituras concurrentes pueden crear inconsistencias en el estado interno del socket.\n\nProhibir esto añadiendo un nuevo campo ctx->write que indica la propiedad exclusiva para la escritura."
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