From: Mathias Krause <minipli@googlemail.com>
Date: Mon, 30 Sep 2013 20:04:24 +0000 (+0200)
Subject: audit: fix info leak in AUDIT_GET requests
X-Git-Url: https://git.stricted.de/?p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git;a=commitdiff_plain;h=3dc7095c8e78dfeb20dce066fe8bfdfd8497212e

audit: fix info leak in AUDIT_GET requests

commit 64fbff9ae0a0a843365d922e0057fc785f23f0e3 upstream.

We leak 4 bytes of kernel stack in response to an AUDIT_GET request as
we miss to initialize the mask member of status_set. Fix that.

Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Paris <eparis@redhat.com>
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/kernel/audit.c b/kernel/audit.c
index 5ce53337a9e4..34eeb48f9c34 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -659,6 +659,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 
 	switch (msg_type) {
 	case AUDIT_GET:
+		status_set.mask		 = 0;
 		status_set.enabled	 = audit_enabled;
 		status_set.failure	 = audit_failure;
 		status_set.pid		 = audit_pid;