CVE-2025-39931

Updated: 2026-01-27

CWE: CWE-908

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.

CVSS3: 7


Vendor State

OS Vendor version Errata
Debian 12 6.1.158-1 DSA-6053-1
Amazon Linux 2023 6.1.155-176.282.amzn2023 ALAS2023-2025-1223

KernelCare State

OS Original kernel version State
Debian 12
Planned
Amazon Linux 2023
In Progress