From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1511654-1518325750-2-15829497225702872379 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES enro, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='uk', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1518325749; b=BCB712vBn0WG8Gh7l/rQHvBd1eY9QBQ4r6ujOZ7aCy8hlNH 4W4D7MsjsFKfMSrn12/emQNIE1eWMtIRpXb0N9jHXZkx94oAyJghA+KFLZO25JMr hkVfm5i9l/4tS92OKl/4FIahVlGphu8jmbs33wr0BwmE2mU8cE+5pb4OURcF6YOu WO3DsI8g//0UwVRQ6778fGEgTTiRw/sCay75Pp28jXMpwckUu3UUWkYIYEU9VGIW cGhXMSqjhkV9GlcsZ8pQHMToLeWnzPrJUT6cwCifTIG9MbjQPDyfidct/ZBF7FQj okn+cLMQChK8WQV/W8Ubd9WgQbIC/vmJViyDO9w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-type:content-transfer-encoding :mime-version:from:to:cc:date:message-id:subject:in-reply-to :sender:list-id; s=arctest; t=1518325749; bh=I38j7KqPMgZaGKRBdld A0r1vYU/o3jDifGioPPlLI1o=; b=CCkmnd9oFNsv9cYpMDV0ZDzdVvIpv9uQA3G i0PszLv1CijqIQS5TG4s7ZvmhMHpWJuHL3r8VzeNh1nyJa9oGDLZ2xBiofvjYjQb scz/C1RxpnkQfv5qbXYF6JVdbptq4s2RYRKRuHA7WP7tR2uqt0E4MIKB285sIKkA 7nSyrUee/rhvomoBxOSYliAzRVkCmkL641AH774F9zOCxrkTzYT0t5nxmA2pAQJB j1C4lYAZ361/Wsly5Ux4BnvC9JSo5lzltXlTqvpHHgcGRa8I1Eq6SNZfAZpovj3G cTbZO1GSdD9N4pqQ/Rs+8bCScDweGgfXhYAUSmbwdWsE5+reZMg== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=decadent.org.uk; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=decadent.org.uk header.result=pass header_is_org_domain=yes Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=decadent.org.uk; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=decadent.org.uk header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753530AbeBKFHa (ORCPT ); Sun, 11 Feb 2018 00:07:30 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:41477 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752669AbeBKEdm (ORCPT ); Sat, 10 Feb 2018 23:33:42 -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, "Tyler Hicks" , "Dan Carpenter" Date: Sun, 11 Feb 2018 04:20:06 +0000 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.2 27/79] eCryptfs: use after free in ecryptfs_release_messaging() 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: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 3.2.99-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter commit db86be3a12d0b6e5c5b51c2ab2a48f06329cb590 upstream. We're freeing the list iterator so we should be using the _safe() version of hlist_for_each_entry(). Fixes: 88b4a07e6610 ("[PATCH] eCryptfs: Public key transport mechanism") Signed-off-by: Dan Carpenter Signed-off-by: Tyler Hicks [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings --- --- a/fs/ecryptfs/messaging.c +++ b/fs/ecryptfs/messaging.c @@ -550,17 +550,17 @@ void ecryptfs_release_messaging(void) mutex_unlock(&ecryptfs_msg_ctx_lists_mux); } if (ecryptfs_daemon_hash) { - struct hlist_node *elem; struct ecryptfs_daemon *daemon; + struct hlist_node *elem, *n; int i; mutex_lock(&ecryptfs_daemon_hash_mux); for (i = 0; i < (1 << ecryptfs_hash_bits); i++) { int rc; - hlist_for_each_entry(daemon, elem, - &ecryptfs_daemon_hash[i], - euid_chain) { + hlist_for_each_entry_safe(daemon, elem, n, + &ecryptfs_daemon_hash[i], + euid_chain) { rc = ecryptfs_exorcise_daemon(daemon); if (rc) printk(KERN_ERR "%s: Error whilst "