crypto: af_alg - Forbid the use internal algorithms

[linux-drm-fsl-dcu.git] / crypto / af_alg.c

diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index f22cc56fd1b383f7ef37472808070e8e31120a11..2bc180e02115b9d18cc08ef7df87d35af4b363c9 100644 (file)
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -127,6 +127,7 @@ EXPORT_SYMBOL_GPL(af_alg_release);
 
 static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 {
+       const u32 forbidden = CRYPTO_ALG_INTERNAL;
        struct sock *sk = sock->sk;
        struct alg_sock *ask = alg_sk(sk);
        struct sockaddr_alg *sa = (void *)uaddr;
@@ -151,7 +152,9 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
        if (IS_ERR(type))
                return PTR_ERR(type);
 
-       private = type->bind(sa->salg_name, sa->salg_feat, sa->salg_mask);
+       private = type->bind(sa->salg_name,
+                            sa->salg_feat & ~forbidden,
+                            sa->salg_mask & ~forbidden);
        if (IS_ERR(private)) {
                module_put(type->owner);
                return PTR_ERR(private);