[Lucid][CVE-2013-2237] af_key: initialize satype in key_notify_policy_flush()

[Luis Henriques]

From: Nicolas Dichtel <nicolas.dichtel at 6wind.com>

BugLink: http://bugs.launchpad.net/bugs/1198296

CVE-2013-2237

This field was left uninitialized. Some user daemons perform check against this
field.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel at 6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert at secunet.com>
(cherry picked from commit 85dfb745ee40232876663ae206cba35f24ab2a40)

Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 net/key/af_key.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/key/af_key.c b/net/key/af_key.c
index 03d626f..9d22e46 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -2694,6 +2694,7 @@ static int key_notify_policy_flush(struct km_event *c)
 	hdr->sadb_msg_pid = c->pid;
 	hdr->sadb_msg_version = PF_KEY_V2;
 	hdr->sadb_msg_errno = (uint8_t) 0;
+	hdr->sadb_msg_satype = SADB_SATYPE_UNSPEC;
 	hdr->sadb_msg_len = (sizeof(struct sadb_msg) / sizeof(uint64_t));
 	hdr->sadb_msg_reserved = 0;
 	pfkey_broadcast(skb_out, GFP_ATOMIC, BROADCAST_ALL, NULL, c->net);
-- 
1.8.1.2