From: Kangjie Lu <kangjielu@xxxxxxxxx> 3.12-stable review patch. If anyone has any objections, please let me know. =============== [ Upstream commit 79e48650320e6fba48369fccf13fd045315b19b8 ] Stack object "dte_facilities" is allocated in x25_rx_call_request(), which is supposed to be initialized in x25_negotiate_facilities. However, 5 fields (8 bytes in total) are not initialized. This object is then copied to userland via copy_to_user, thus infoleak occurs. Signed-off-by: Kangjie Lu <kjlu@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- net/x25/x25_facilities.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/x25/x25_facilities.c b/net/x25/x25_facilities.c index b8253250d723..c42bf2b8ec4f 100644 --- a/net/x25/x25_facilities.c +++ b/net/x25/x25_facilities.c @@ -275,6 +275,7 @@ int x25_negotiate_facilities(struct sk_buff *skb, struct sock *sk, memset(&theirs, 0, sizeof(theirs)); memcpy(new, ours, sizeof(*new)); + memset(dte, 0, sizeof(*dte)); len = x25_parse_facilities(skb, &theirs, dte, &x25->vc_facil_mask); if (len < 0) -- 2.8.2 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html