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CVE-2025-39931

HIGH CVSS: 7.8 Published: 2025-10-04 Modified: 2026-07-30

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Set merge to zero early in af_alg_sendmsg If an error causes af_alg_sendmsg to abort, ctx->merge may contain a garbage value from the previous loop. This may then trigger a crash on the next entry into af_alg_sendmsg when it attempts to do a merge that can't be done. Fix this by setting ctx->merge to zero near the start of the loop.

Affected Platforms

Linux Linux Kernel

Weakness Type

CWE-908

References