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 C32661482E5 for ; Wed, 17 Apr 2024 15:59:57 +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=1713369597; cv=none; b=fnytPNhlDWf619iBm+m1DJL9c5us5KtHY97zFIJ6jTonboz/EbVrSFYeJiVtpNznvBtB2GotIRERt0yI5hyB9cLwrwhWto7Bt1zujGiLxhGcmvl8KI3XiWWJ8xvNDZis+QxCufC+QYAT4jYO6jnTRKhioKuUsAij0nSICesORSc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713369597; c=relaxed/simple; bh=8J5SO3DNUT//NPtTHrQJ3AhLspye+0Yfz7f+M9ySrFY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=GplysNsDAX4srTOHSrTvwjIVZZnulEUNYthW3iGhbn/Flz7TmG7usKbusLeAQ59uWBGaW9uz2tSanpx50uno7MlVrAAHJvQHpxp8JeWSJIlXgjy7c7cz/FL3jji1GGXiMGdffABtv33doeLkctuW5lu7fk21ZGdDZGGNe+lyp5A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=pDjo563j; 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="pDjo563j" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE6ECC2BD11; Wed, 17 Apr 2024 15:59:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1713369597; bh=8J5SO3DNUT//NPtTHrQJ3AhLspye+0Yfz7f+M9ySrFY=; h=From:To:Cc:Subject:Date:Reply-to:From; b=pDjo563j4nUJD2enN70KJ6zfG8YWVu+ta342EdOVaf+VDIL4lhh8OmaQeg28Jpx0k i8kXMcQiMm4xpjlmOE6Xdrie7S+C413e1TUwpU7CTBbJd7j7ua9Z98liL3TxhAU0JM 9W8bszYrXzLOga6yRULasWWURLvsetFgffa9nKqY= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2024-26911: drm/buddy: Fix alloc_range() error handling code Date: Wed, 17 Apr 2024 17:59:36 +0200 Message-ID: <2024041736-CVE-2024-26911-e758@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=2042; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=8J5SO3DNUT//NPtTHrQJ3AhLspye+0Yfz7f+M9ySrFY=; b=owGbwMvMwCRo6H6F97bub03G02pJDGnyH1+oLTRrleq1nHXrWdn+it7H5j+999/Y8lGTXbR07 lsHjxnBHbEsDIJMDLJiiixftvEc3V9xSNHL0PY0zBxWJpAhDFycAjCRYG+GBQfvixdoGS228Lgz ceXqvzYW574+SmeYnxgp7BCz2TjnWJ/u788ikYqL2x8HAQA= 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/buddy: Fix alloc_range() error handling code Few users have observed display corruption when they boot the machine to KDE Plasma or playing games. We have root caused the problem that whenever alloc_range() couldn't find the required memory blocks the function was returning SUCCESS in some of the corner cases. The right approach would be if the total allocated size is less than the required size, the function should return -ENOSPC. The Linux kernel CVE team has assigned CVE-2024-26911 to this issue. Affected and fixed versions =========================== Issue introduced in 6.7 with commit 0a1844bf0b53 and fixed in 6.7.6 with commit 4b59c3fada06 Issue introduced in 6.7 with commit 0a1844bf0b53 and fixed in 6.8 with commit 8746c6c9dfa3 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-2024-26911 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/drm_buddy.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/4b59c3fada06e5e8010ef7700689c71986e667a2 https://git.kernel.org/stable/c/8746c6c9dfa31d269c65dd52ab42fde0720b7d91