diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-06-14 13:35:37 +0300 |
|---|---|---|
| committer | Willy Tarreau <w@1wt.eu> | 2017-11-02 07:16:29 +0100 |
| commit | f478b4264a3c62b6b2d2b63a707e56c2f0cfdc6c (patch) | |
| tree | a66e90dfc866215a671602b0af477b9a6fb68db0 | |
| parent | 6ac502ceabf86463c4a35166851edf497960262f (diff) | |
xfrm: NULL dereference on allocation failure
commit e747f64336fc15e1c823344942923195b800aa1e upstream.
The default error code in pfkey_msg2xfrm_state() is -ENOBUFS. We
added a new call to security_xfrm_state_alloc() which sets "err" to zero
so there several places where we can return ERR_PTR(0) if kmalloc()
fails. The caller is expecting error pointers so it leads to a NULL
dereference.
Fixes: df71837d5024 ("[LSM-IPSec]: Security association restriction.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
| -rw-r--r-- | net/key/af_key.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/key/af_key.c b/net/key/af_key.c index 66f51c5a8a3a..b3191ef1b437 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -1135,6 +1135,7 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net, goto out; } + err = -ENOBUFS; key = ext_hdrs[SADB_EXT_KEY_AUTH - 1]; if (sa->sadb_sa_auth) { int keysize = 0; |