linux-kernel - [PATCH 3.12 202/235] apparmor: fix refcount bug in profile replacement

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Message-Id: <6265dbd49067df7b38b0ed20deaee10d9dae0e1f.1485514374.git.jslaby@suse.cz>
Date:   Fri, 27 Jan 2017 11:55:35 +0100
From:   Jiri Slaby <jslaby@...e.cz>
To:     stable@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        John Johansen <john.johansen@...onical.com>,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 202/235] apparmor: fix refcount bug in profile replacement

From: John Johansen <john.johansen@...onical.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit dcda617a0c5160c73e0aa02813c871339ea08004 upstream.

Signed-off-by: John Johansen <john.johansen@...onical.com>
Acked-by: Seth Arnold <seth.arnold@...onical.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 security/apparmor/policy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/security/apparmor/policy.c b/security/apparmor/policy.c
index 705c2879d3a9..222052f64e2c 100644
--- a/security/apparmor/policy.c
+++ b/security/apparmor/policy.c
@@ -1189,12 +1189,12 @@ ssize_t aa_replace_profiles(void *udata, size_t size, bool noreplace)
 				aa_get_profile(newest);
 				aa_put_profile(parent);
 				rcu_assign_pointer(ent->new->parent, newest);
-			} else
-				aa_put_profile(newest);
+			}
 			/* aafs interface uses replacedby */
 			rcu_assign_pointer(ent->new->replacedby->profile,
 					   aa_get_profile(ent->new));
 			__list_add_profile(&parent->base.profiles, ent->new);
+			aa_put_profile(newest);
 		} else {
 			/* aafs interface uses replacedby */
 			rcu_assign_pointer(ent->new->replacedby->profile,
-- 
2.11.0