From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3C57E67752 for ; Thu, 4 Apr 2024 08:23:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712219032; cv=none; b=KEK9D3qUNgdezV2MT7JjRq675k6UkEsLnmpWNklz5xcSajnrLUCFPdiPWU2PTzdyvujz355Zxyl1WKyj0FYETO/Qh9aoU7OSnInYWoOaaS4MNGPeafv5bBwNfIhWl4U1eMNsOFyhPe0vvJ+Ekc1YaceLRoF1Qz5GE/xkdjLBIjQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712219032; c=relaxed/simple; bh=jwVp4H/TpJl4M3/0wEZ3XWWFjbHEU0+pSA2k0UVCRUg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=FG1jdJmNDTL3tah0sfmv5cfPcJ3YH7/TCJ3+y57XZZ2FzqW4DlYP0zkvO+Et9+sqY4qH6sW+8/eTD16rcj/GSiUooUUyK5K4OeP4Ok8LQpVa60EMLmCo3/Vh8umXSjqNqdaWhfdOThhtJrVvWjUqguKG+nYseTIRrUqYs7DmZGA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=o360IY92; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="o360IY92" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3667AC433C7; Thu, 4 Apr 2024 08:23:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1712219031; bh=jwVp4H/TpJl4M3/0wEZ3XWWFjbHEU0+pSA2k0UVCRUg=; h=From:To:Cc:Subject:Date:Reply-to:From; b=o360IY92FW6SBe/KRWLdmq5cxHxITMfQlbr3fCdTpcki002dRritQbWP8sGQrZfF2 YeHvjyE58KlLhab3wCzGISfxO4w6CsbdKCGPWkNlyIwci6sirDAvozTdDyW1iM85Kj h/y1nZ68G4bi4qZW4NWPNag4I3nco16Ht1jBiKqQ= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2024-26797: drm/amd/display: Prevent potential buffer overflow in map_hw_resources Date: Thu, 4 Apr 2024 10:23:14 +0200 Message-ID: <2024040402-CVE-2024-26797-704f@gregkh> X-Mailer: git-send-email 2.44.0 Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reply-to: , X-Developer-Signature: v=1; a=openpgp-sha256; l=2542; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=jwVp4H/TpJl4M3/0wEZ3XWWFjbHEU0+pSA2k0UVCRUg=; b=owGbwMvMwCRo6H6F97bub03G02pJDGl8yWnFUzOtjaes4Pu0mWsVQ1bOCe45NXYmi0qNIu3id 4QcNhXoiGVhEGRikBVTZPmyjefo/opDil6Gtqdh5rAygQxh4OIUgInsms8wP/VG9a/1ZkuVHfiy hL5ZfFx6wGbHZIY5PMrXbZcemqHZ0Vw4I+/14mcduw2DAQ== X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Prevent potential buffer overflow in map_hw_resources Adds a check in the map_hw_resources function to prevent a potential buffer overflow. The function was accessing arrays using an index that could potentially be greater than the size of the arrays, leading to a buffer overflow. Adds a check to ensure that the index is within the bounds of the arrays. If the index is out of bounds, an error message is printed and break it will continue execution with just ignoring extra data early to prevent the buffer overflow. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/dml2_wrapper.c:79 map_hw_resources() error: buffer overflow 'dml2->v20.scratch.dml_to_dc_pipe_mapping.disp_cfg_to_stream_id' 6 <= 7 drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/dml2_wrapper.c:81 map_hw_resources() error: buffer overflow 'dml2->v20.scratch.dml_to_dc_pipe_mapping.disp_cfg_to_plane_id' 6 <= 7 The Linux kernel CVE team has assigned CVE-2024-26797 to this issue. Affected and fixed versions =========================== Issue introduced in 6.7 with commit 7966f319c66d and fixed in 6.7.9 with commit 50a6302cf881 Issue introduced in 6.7 with commit 7966f319c66d and fixed in 6.8 with commit 0f8ca019544a Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2024-26797 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/50a6302cf881f67f1410461a68fe9eabd00ff31d https://git.kernel.org/stable/c/0f8ca019544a252d1afb468ce840c6dcbac73af4