crypto: af_alg - Set merge to zero early in af_alg_sendmsg

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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.

Fixes: 8ff590903d ("crypto: algif_skcipher - User-space interface for skcipher operations")
Reported-by: Muhammad Alifa Ramdhan <ramdhan@starlabs.sg>
Reported-by: Bing-Jhong Billy Jheng <billy@starlabs.sg>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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Herbert Xu 2025-09-16 15:42:41 +08:00

parent 46834d90a9

commit 9574b2330d

1 changed files with 2 additions and 1 deletions

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crypto/af_alg.c

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