CVE-2025-39964

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.

More information : https://git.kernel.org/stable/c/0f28c4adbc4a97437874c9b669fd7958a8c6d6ce