From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Fri, 10 Jun 2016 21:34:26 +0000 (+0200)
Subject: apparmor: do not expose kernel stack
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f4ee2def2d70692ccff0d55353df4ee594fd0017;p=deliverable%2Flinux.git

apparmor: do not expose kernel stack

Do not copy uninitalized fields th.td_hilen, th.td_data.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: John Johansen <john.johansen@canonical.com>
---

diff --git a/security/apparmor/match.c b/security/apparmor/match.c
index 32b72eb3d988..3f900fcca8fb 100644
--- a/security/apparmor/match.c
+++ b/security/apparmor/match.c
@@ -63,7 +63,9 @@ static struct table_header *unpack_table(char *blob, size_t bsize)
 
 	table = kvzalloc(tsize);
 	if (table) {
-		*table = th;
+		table->td_id = th.td_id;
+		table->td_flags = th.td_flags;
+		table->td_lolen = th.td_lolen;
 		if (th.td_flags == YYTD_DATA8)
 			UNPACK_ARRAY(table->td_data, blob, th.td_lolen,
 				     u8, byte_to_byte);