From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sat, 15 Feb 2025 00:57:51 +0000 (+0800)
Subject: crypto: skcipher - Zap type in crypto_alloc_sync_skcipher
X-Git-Tag: v6.14.9~402
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=85919fcb987d616be8489d0a7d3b7a61e396c19c;p=thirdparty%2Fkernel%2Fstable.git

crypto: skcipher - Zap type in crypto_alloc_sync_skcipher

[ Upstream commit ee509efc74ddbc59bb5d6fd6e050f9ef25f74bff ]

The type needs to be zeroed as otherwise the user could use it to
allocate an asynchronous sync skcipher.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/crypto/skcipher.c b/crypto/skcipher.c
index a9eb2dcf28982..2d2b1589a0097 100644
--- a/crypto/skcipher.c
+++ b/crypto/skcipher.c
@@ -681,6 +681,7 @@ struct crypto_sync_skcipher *crypto_alloc_sync_skcipher(
 
 	/* Only sync algorithms allowed. */
 	mask |= CRYPTO_ALG_ASYNC | CRYPTO_ALG_SKCIPHER_REQSIZE_LARGE;
+	type &= ~(CRYPTO_ALG_ASYNC | CRYPTO_ALG_SKCIPHER_REQSIZE_LARGE);
 
 	tfm = crypto_alloc_tfm(alg_name, &crypto_skcipher_type, type, mask);