CVE-2025-39931

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.

More information : https://git.kernel.org/stable/c/045ee26aa3920a47ec46d7fcb302420bf01fd753