From: Kangjie Lu <kangji...@gmail.com>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
[ Upstream commit b8670c09f37bdf2847cc44f36511a53afc6161fd ]
The stack object “info” has a total size of 12 bytes. Its last byte
is padding which is not initialized and leaked via “put_cmsg”.
Signed-off-by: Kangjie Lu <k...@gatech.edu>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Jiri Slaby <jsl...@suse.cz>
---
net/llc/af_llc.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index c71b699eb555..a6c281ddd8b4 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -626,6 +626,7 @@ static void llc_cmsg_rcv(struct msghdr *msg, struct sk_buff
*skb)
if (llc->cmsg_flags & LLC_CMSG_PKTINFO) {
struct llc_pktinfo info;
+ memset(&info, 0, sizeof(info));
info.lpi_ifindex = llc_sk(skb->sk)->dev->ifindex;
llc_pdu_decode_dsap(skb, &info.lpi_sap);
llc_pdu_decode_da(skb, info.lpi_mac);
--
2.8.2
