Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754211AbaFXSUM (ORCPT ); Tue, 24 Jun 2014 14:20:12 -0400 Received: from mx1.redhat.com ([209.132.183.28]:28474 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753542AbaFXSUK (ORCPT ); Tue, 24 Jun 2014 14:20:10 -0400 From: Jeff Moyer To: Benjamin LaHaise Cc: Linus Torvalds , security@kernel.org, linux-aio@kvack.org, linux-kernel@vger.kernel.org, Mateusz Guzik , Petr Matousek , Kent Overstreet , stable@vger.kernel.org Subject: Re: [PATCH 1/2] aio: fix aio request leak when events are reaped by userspace References: X-PGP-KeyID: 1F78E1B4 X-PGP-CertKey: F6FE 280D 8293 F72C 65FD 5A58 1FF8 A7CA 1F78 E1B4 X-PCLoadLetter: What the f**k does that mean? Date: Tue, 24 Jun 2014 14:20:02 -0400 In-Reply-To: (Benjamin LaHaise's message of "Tue, 24 Jun 2014 14:01:54 -0400") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Benjamin LaHaise writes: > The aio cleanups and optimizations by kmo that were merged into the 3.10 > tree added a regression for userspace event reaping. Specifically, the > reference counts are not decremented if the event is reaped in userspace, > leading to the application being unable to submit further aio requests. > This patch applies to 3.12+. A separate backport is required for 3.10/3.11. > This issue was uncovered as part of CVE-2014-0206. > > Signed-off-by: Benjamin LaHaise Reviewed-by: Jeff Moyer -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/