author: Eric Biggers <ebiggers@google.com> 2020-10-26 13:07:15 -0700
committer: Herbert Xu <herbert@gondor.apana.org.au> 2020-11-06 14:29:11 +1100
commit: 92eb6c3060ebe3adf381fd9899451c5b047bb14d
parent: 2d653936eb2cf613526290caa512b46e4c0d71ae
Commit Summary:
Diffstat:
1 file changed, 6 insertions, 3 deletions
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index d11db80d24cd..9acb9d2c4bcf 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -147,7 +147,7 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
const u32 allowed = CRYPTO_ALG_KERN_DRIVER_ONLY;
struct sock *sk = sock->sk;
struct alg_sock *ask = alg_sk(sk);
- struct sockaddr_alg *sa = (void *)uaddr;
+ struct sockaddr_alg_new *sa = (void *)uaddr;
const struct af_alg_type *type;
void *private;
int err;
@@ -155,7 +155,11 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
if (sock->state == SS_CONNECTED)
return -EINVAL;
- if (addr_len < sizeof(*sa))
+ BUILD_BUG_ON(offsetof(struct sockaddr_alg_new, salg_name) !=
+ offsetof(struct sockaddr_alg, salg_name));
+ BUILD_BUG_ON(offsetof(struct sockaddr_alg, salg_name) != sizeof(*sa));
+
+ if (addr_len < sizeof(*sa) + 1)
return -EINVAL;
/* If caller uses non-allowed flag, return error. */
@@ -163,7 +167,7 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
return -EINVAL;
sa->salg_type[sizeof(sa->salg_type) - 1] = 0;
- sa->salg_name[sizeof(sa->salg_name) + addr_len - sizeof(*sa) - 1] = 0;
+ sa->salg_name[addr_len - sizeof(*sa) - 1] = 0;
type = alg_get_type(sa->salg_type);
if (PTR_ERR(type) == -ENOENT) {