diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-06-14 13:35:37 +0300 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2017-11-06 15:30:59 +0100 |
| commit | 3a777588fcde2574e5d9550da472e6dd86f67d67 (patch) | |
| tree | 9a8ea13a13577d0908afa02cb25001caf50860b2 | |
| parent | 1f1e3e38082a32be54d6bb30a138c940708b64ef (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 e4fa2b82b..4f8d5d4be 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -1157,6 +1157,7 @@ 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; |