From patchwork Thu Jan 27 20:58:10 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: 1585304 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=MpDpllvT; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=none (no SPF record) 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 4JlCd45wRcz9sPC for ; Fri, 28 Jan 2022 07:59:20 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1nDBrO-0002Pb-3O; Thu, 27 Jan 2022 20:59:14 +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 1nDBrN-0002PU-1f for kernel-team@lists.ubuntu.com; Thu, 27 Jan 2022 20:59:13 +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 366583F12B for ; Thu, 27 Jan 2022 20:59:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1643317152; bh=BFWmd0mH0TdUd/NmnOj4pZcjyJwlawWQ8p+bUXgZHUI=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=MpDpllvTa8sEFn4XJnVzn5fj4DlwfpNA/j8HFqCp+xJeOhCkACPrUs6Vq3PVUI0lB adbwsPTKpUnckZgd+3TOXkMMMBtqCzFjg42nogCPf2sz+ecsq66rzXHZYZmJcryX9O jNBTp4CWYNgdGG9oEB6uS0h5uhtcAJHLSt5tlqJ9l4rAoaHdiN4AmqO8R4e2nQapc5 +DFas1caCkacET34Rq1cJvD3TAI6k7YL6oSp7SaEpJc3Vw2fuH4IN1bDNMJYBYEo4e w+x5KthG/vHg3CStv+cdykKLFKSg42Nen9mpfZaX7/FbCak9e7q4PvQzdBp+noY7tv NgTJlv4PaOspA== From: Thadeu Lima de Souza Cascardo To: kernel-team@lists.ubuntu.com Subject: [SRU Bionic, Focal, OEM-5.10, HWE-5.11, Impish, OEM-5.14, Jammy 0/1] CVE-2022-22942 Date: Thu, 27 Jan 2022 17:58:10 -0300 Message-Id: <20220127205812.34060-1-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] Unprivileged users with DRM access on a system using vmwgfx could gain access to files opened by other processes. [Fix] Backports were provided by author and tested on kernels 4.15, 5.4, 5.10, 5.11, 5.13, 5.14 and 5.15. [Test case] A program that exercises the changed path gets EFAULT as expected. [Potential regression] Only vmwgfx users should be affected. Mathias Krause (1): UBUNTU: SAUCE: drm/vmwgfx: Fix stale file descriptors on failed usercopy drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 5 ++-- drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 34 ++++++++++++------------- drivers/gpu/drm/vmwgfx/vmwgfx_fence.c | 2 +- drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 2 +- 4 files changed, 21 insertions(+), 22 deletions(-) Acked-by: Luke Nowakowski-Krijger Acked-by: Ian May