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-Tag: v3.4.72~23
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e0c56ab133fcb29fa3709c095f9347a033662c1;p=thirdparty%2Fkernel%2Fstable.git

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 a57194b61418b..4478f7b2e9fdc 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -684,6 +684,7 @@ 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;