From patchwork Thu Aug 3 19:00:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuxuan Luo X-Patchwork-Id: 1816646 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.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=) Authentication-Results: legolas.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=MgBt2S/a; dkim-atps=neutral Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RGypz3jswz1yds for ; Fri, 4 Aug 2023 05:00:43 +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 1qRdYp-0006m4-4L; Thu, 03 Aug 2023 19:00:35 +0000 Received: from smtp-relay-internal-0.internal ([10.131.114.225] helo=smtp-relay-internal-0.canonical.com) by huckleberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1qRdYn-0006lq-LV for kernel-team@lists.ubuntu.com; Thu, 03 Aug 2023 19:00:33 +0000 Received: from mail-qk1-f200.google.com (mail-qk1-f200.google.com [209.85.222.200]) (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-internal-0.canonical.com (Postfix) with ESMTPS id 5BD793F71C for ; Thu, 3 Aug 2023 19:00:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1691089233; bh=i2hRXh1vaYcy1UGgaeDy4SaseNiQFHJwsmeJxdLqkvI=; h=From:To:Subject:Date:Message-Id:MIME-Version; b=MgBt2S/axUojz5W7bj0J7mNIdtRq67IHfwHx+Zw2SK3hC+JnMkwKbFeoP8rdtEgcD CRBpXejGFOjSppl0RP4Vl5XwBNzBeHSCsWRHJXWBq5eLNYY22IY3rUNeCACdBwlAxw b/tIfRJ99yOoHx+XW8Eq7RpiO8b+vnTX5mrpEfinORrPU8oq6SO5PIlQvfV33WYtXV AwRHFWX5rnzcRoF3WPSEWfpGU3rZflqBfS0zo4XDzEOLGZ23EZURotpi1l3BEcJnAZ OBT6aJY/q7eVUfrWH6YQkf/PngVfkBZl3j4Dr8SrcnWMQGG7lKVNUe+Ltgz3PzDVo5 VikORvtNweqOw== Received: by mail-qk1-f200.google.com with SMTP id af79cd13be357-76843c4b0f3so121270385a.2 for ; Thu, 03 Aug 2023 12:00:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691089231; x=1691694031; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=i2hRXh1vaYcy1UGgaeDy4SaseNiQFHJwsmeJxdLqkvI=; b=PvwW8QBDPRqthwwEUzSEz72Kp1WLJT0+a+bwqmr2sOFSfj3I2PO4x0XhvdqEFcBUdk qx5OZEiCixy2bTK0JA9AU2E5CC49m5+RcgDMzleE2oAGZPRx6lSFVGehM8i+VfFa9Fy8 VUCaOSPTj4FNEhLgD6vjZkX+A2B3Xn/wAvQycCdkqir5YORHaZ0cd56OlhGyUgXV25c8 psMd9TbKnlVHu42+ahJWEBT4kudk5Pyx63q2KU6dTvz51+/LvkROu/wCo8JjfG0fwH8s gnLq0uO9fsMEU1dcLLsz7kvL0QIxevTIG7DaRq24epp11ovynDyNi9xRhQJhH4KeAA0R E8Hg== X-Gm-Message-State: ABy/qLYGfWPFV7XZJpqtLKQXFIGPTEKg1luo3QmXJSygyiySEshUtLdE gt2QUKTSWluChcA8kelveeCkGAihmvZMByQSm5/l/CU753qfNwVjsKkvSzuThef97gWHww50zxW SD6RwfN+6ZlnjWbYXzUNRdIS+wNLvdLsNJdy9YrITpc7eEUX67A== X-Received: by 2002:a05:620a:298c:b0:767:b4c0:45a1 with SMTP id r12-20020a05620a298c00b00767b4c045a1mr22948384qkp.66.1691089231590; Thu, 03 Aug 2023 12:00:31 -0700 (PDT) X-Google-Smtp-Source: APBJJlGHLtzKpAGMksgRNfMVwHVYVeXqZ7djxY49byb3agowgK1sweBEEaTC8n4ZlEpWue2D4xYg7g== X-Received: by 2002:a05:620a:298c:b0:767:b4c0:45a1 with SMTP id r12-20020a05620a298c00b00767b4c045a1mr22948373qkp.66.1691089231319; Thu, 03 Aug 2023 12:00:31 -0700 (PDT) Received: from cache-ubuntu.hsd1.nj.comcast.net ([2601:86:200:98b0:4cbe:df6f:d612:fbf3]) by smtp.gmail.com with ESMTPSA id x16-20020a05620a14b000b00767d47eb29bsm108387qkj.119.2023.08.03.12.00.30 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Aug 2023 12:00:30 -0700 (PDT) From: Yuxuan Luo To: kernel-team@lists.ubuntu.com Subject: [SRU][Jammy-OEM-5.17/OEM-6.0][PATCH 0/1] CVE-2023-3609 Date: Thu, 3 Aug 2023 15:00:28 -0400 Message-Id: <20230803190029.53725-1-yuxuan.luo@canonical.com> X-Mailer: git-send-email 2.34.1 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] A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. [Backport] Clean cherry pick. [Test] Smoke tested via adding an u32 filter to a dummy device using `tc`. [Potential Regression] Expect very low regression. Lee Jones (1): net/sched: cls_u32: Fix reference counter leak leading to overflow net/sched/cls_u32.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-)