VULNERABILITY INTELLIGENCE

CVE-2025-39964

CVSS score7.8 HIGH
EPSS probability1.57%
CISA KEVKnown exploited vulnerability
Published2025-10-13
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Linux Kernel Race Condition Vulnerability

Vendor / product: Linux / Kernel

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.

Weakness classification

  • nvd@nist.gov: CWE-362
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-362

Primary references