From patchwork Wed May 4 22:48:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thadeu Lima de Souza Cascardo X-Patchwork-Id: 1626650 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=canonical.com header.i=@canonical.com header.a=rsa-sha256 header.s=20210705 header.b=bemUimOS; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ubuntu.com (client-ip=91.189.94.19; helo=huckleberry.canonical.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=) Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4KtsVB0vc1z9sCq for ; Thu, 5 May 2022 08:50:08 +1000 (AEST) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1nmNoi-0003Yl-M3; Wed, 04 May 2022 22:49:56 +0000 Received: from smtp-relay-canonical-1.internal ([10.131.114.174] helo=smtp-relay-canonical-1.canonical.com) by huckleberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1nmNog-0003Xt-TI for kernel-team@lists.ubuntu.com; Wed, 04 May 2022 22:49:54 +0000 Received: from localhost.localdomain (1.general.cascardo.us.vpn [10.172.70.58]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-canonical-1.canonical.com (Postfix) with ESMTPSA id BC92A3F130 for ; Wed, 4 May 2022 22:49:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1651704594; bh=L8s52gyO/wfp8UnSPFO1NBMXXkFqUv8lQe7IshuptgA=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=bemUimOS7pJJmc2fAKoK9S3Jbvv3uE5mC1fhqTyD5B6MHVGG/d4gXGaMiX2Lqt8Bc rQoReGM7sEiiZgyww8hdyrfSjabBL1+D1Pczjxn41kuO075z1GQMo22mifPcD8mUL+ VZy0CbV5kQCddnJW2AFD8746ayFX/IDmBaBv3AgB31ur2+rAzbxQRMD7bEQVU3zFyk QPFTBbFWpvDWv0y4QsBLHQRJc3XJwiFDIYYPzhtXGIkulE9rDPKwHb2sAYBU5IASxH P+63sWANBxtLVdgpGsNI0UBRFdGhUFs9murfv7mITBuc4H0kMDukoS8sBbJDBPq3BD qzSL39eGsUcCw== From: Thadeu Lima de Souza Cascardo To: kernel-team@lists.ubuntu.com Subject: [SRU Bionic 0/2] CVE-2022-1419 Date: Wed, 4 May 2022 19:48:48 -0300 Message-Id: <20220504224850.3702338-1-cascardo@canonical.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" [Impact] It was discovered that the virtual graphics memory manager implementation in the Linux kernel was subject to a race condition, potentially leading to an information leak. [Test case] reproducer was tested, though no leak could be demonstreated with or without the fix. [Potential regression] vgem driver users may be affected. Chris Wilson (1): drm/vgem: Reclassify buffer creation debug message Daniel Vetter (1): drm/vgem: Close use-after-free race in vgem_gem_create drivers/gpu/drm/vgem/vgem_drv.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) Acked-by: Luke Nowakowski-Krijger Acked-by: Stefan Bader