Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754856AbcKNCJj (ORCPT ); Sun, 13 Nov 2016 21:09:39 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:46244 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754693AbcKNCGX (ORCPT ); Sun, 13 Nov 2016 21:06:23 -0500 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Rami Rosen" , "Ilan Tayari" , "Steffen Klassert" Date: Mon, 14 Nov 2016 00:14:07 +0000 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.2 132/152] xfrm: Fix memory leak of aead algorithm name In-Reply-To: X-SA-Exim-Connect-IP: 2a02:8011:400e:2:6f00:88c8:c921:d332 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1221 Lines: 36 3.2.84-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Ilan Tayari commit b588479358ce26f32138e0f0a7ab0678f8e3e601 upstream. commit 1a6509d99122 ("[IPSEC]: Add support for combined mode algorithms") introduced aead. The function attach_aead kmemdup()s the algorithm name during xfrm_state_construct(). However this memory is never freed. Implementation has since been slightly modified in commit ee5c23176fcc ("xfrm: Clone states properly on migration") without resolving this leak. This patch adds a kfree() call for the aead algorithm name. Fixes: 1a6509d99122 ("[IPSEC]: Add support for combined mode algorithms") Signed-off-by: Ilan Tayari Acked-by: Rami Rosen Signed-off-by: Steffen Klassert Signed-off-by: Ben Hutchings --- net/xfrm/xfrm_state.c | 1 + 1 file changed, 1 insertion(+) --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -351,6 +351,7 @@ static void xfrm_state_gc_destroy(struct { tasklet_hrtimer_cancel(&x->mtimer); del_timer_sync(&x->rtimer); + kfree(x->aead); kfree(x->aalg); kfree(x->ealg); kfree(x->calg);