xfrm: NULL dereference on allocation failure
authorDan Carpenter <dan.carpenter@oracle.com>
Wed, 14 Jun 2017 10:35:37 +0000 (13:35 +0300)
committerSteffen Klassert <steffen.klassert@secunet.com>
Wed, 14 Jun 2017 10:40:49 +0000 (12:40 +0200)
commite747f64336fc15e1c823344942923195b800aa1e
treeba3856066d9146c5173a77e130619f301520b75b
parent1e3d0c2c70cd3edb5deed186c5f5c75f2b84a633
xfrm: NULL dereference on allocation failure

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>
net/key/af_key.c