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CVE-2025-39964
CWE-362
High
77.8
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
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.
Source: NVD
Signals
- CVSS
- 7.8
- High · v3.1
- EPSS
- 1.27%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Sept 2026
- Fix commit
- No known fix commit
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-362
- Published
- 13 Oct 2025
- Last modified 19 Sept 2026
How to read these signals: RPS · EPSS · CISA KEV · Data sources
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Data as of 7 Oct 2026, 05:16 UK time