crypto: af_alg - whitelist mask and type

[pandora-kernel.git] / crypto / af_alg.c

diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 68ec1ac..db3e5ec 100644 (file)
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -149,6 +149,7 @@ EXPORT_SYMBOL_GPL(af_alg_release_parent);
 
 static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 {
+       const u32 allowed = 0;
        struct sock *sk = sock->sk;
        struct alg_sock *ask = alg_sk(sk);
        struct sockaddr_alg *sa = (void *)uaddr;
@@ -156,6 +157,10 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
        void *private;
        int err;
 
+       /* If caller uses non-allowed flag, return error. */
+       if ((sa->salg_feat & ~allowed) || (sa->salg_mask & ~allowed))
+               return -EINVAL;
+
        if (sock->state == SS_CONNECTED)
                return -EINVAL;