[PATCH 3.10 121/268] apparmor: do not expose kernel stack

[Willy Tarreau]

From: Heinrich Schuchardt <xypron.glpk@xxxxxx>

commit f4ee2def2d70692ccff0d55353df4ee594fd0017 upstream.

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

Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx>
Signed-off-by: John Johansen <john.johansen@xxxxxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
Signed-off-by: Willy Tarreau <w@xxxxxx>
---
 security/apparmor/match.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/security/apparmor/match.c b/security/apparmor/match.c
index 10d824b..704b0eb 100644
--- a/security/apparmor/match.c
+++ b/security/apparmor/match.c
@@ -61,7 +61,9 @@ static struct table_header *unpack_table(char *blob, size_t bsize)
 
 	table = kvmalloc(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);
-- 
2.8.0.rc2.1.gbe9624a