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 402812877DC for ; Thu, 11 Sep 2025 16:53:20 +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=1757609600; cv=none; b=UME2yNleHcvL0vX21MmBglMMT9JQWD02IyAh2SzLjxi7iHG8TguKGrDSLuvvLqppUuP64yaZcMKDThSuzB2r0ewcAEWuzajiVFEnD/3wVB2W83RcFk+iv8bTrJTvbDIJ7ECwUUV5wt+wN2sXUmXL8yXyAZcuDmIQNE6fI4nFXag= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757609600; c=relaxed/simple; bh=fWaBoNEFiw/U6Y+2kaJagTPbqg6d8LlXpqrVj8745iY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=q8sNiZ0Cl625nq4Kjl5RgqYuqUj0WMp+YYOhIv9ncVFRRlgZr5Xiv5Xd6hzdTUv02taV/guNhcIOmw7HJBHhjQfoxA7uO9mcAdtv17drpOhHgz9gdOcpJT4Jx4eHZirGJgG0cVujGmf45Z4QLXpProtAwTTd3phtI13HePyJkgU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=HovdekyU; 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="HovdekyU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A9D89C4CEF0; Thu, 11 Sep 2025 16:53:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1757609600; bh=fWaBoNEFiw/U6Y+2kaJagTPbqg6d8LlXpqrVj8745iY=; h=From:To:Cc:Subject:Date:Reply-to:From; b=HovdekyUOhfhoR0K6pecnCzHIxabJxrAgXr5AO1FHNFASIHNqCgJPpq4+FB3dg+iB yyPMg12efd7kEkE+cDZLLjVWr1/CcCuuh960gOow+ngybXzbL0sZ8c5Q4XfDQOFCTs r5E2fjNrYb2bbdslns4f83mtMjrZ4WvFolcFQalE= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2025-39741: drm/xe/migrate: don't overflow max copy size Date: Thu, 11 Sep 2025 18:52:42 +0200 Message-ID: <2025091138-CVE-2025-39741-8730@gregkh> X-Mailer: git-send-email 2.51.0 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=2506; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=owInRIOEIkrNgL+Iyhoebf/sVDy0bmJl7H/vxE//K9g=; b=owGbwMvMwCRo6H6F97bub03G02pJDBmH/oUrvxcxbr0tu+lW6J6iFU9intfP35o/2fBCpYgW8 9PHT9jmdcSyMAgyMciKKbJ82cZzdH/FIUUvQ9vTMHNYmUCGMHBxCsBEfMQY5tdbiEjEMiw63vX0 8qbuxFVPAhW+rmGYK1P+UnpebevTH8vVZW+rPdn3qpNDDwA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/xe/migrate: don't overflow max copy size With non-page aligned copy, we need to use 4 byte aligned pitch, however the size itself might still be close to our maximum of ~8M, and so the dimensions of the copy can easily exceed the S16_MAX limit of the copy command leading to the following assert: xe 0000:03:00.0: [drm] Assertion `size / pitch <= ((s16)(((u16)~0U) >> 1))` failed! platform: BATTLEMAGE subplatform: 1 graphics: Xe2_HPG 20.01 step A0 media: Xe2_HPM 13.01 step A1 tile: 0 VRAM 10.0 GiB GT: 0 type 1 WARNING: CPU: 23 PID: 10605 at drivers/gpu/drm/xe/xe_migrate.c:673 emit_copy+0x4b5/0x4e0 [xe] To fix this account for the pitch when calculating the number of current bytes to copy. (cherry picked from commit 8c2d61e0e916e077fda7e7b8e67f25ffe0f361fc) The Linux kernel CVE team has assigned CVE-2025-39741 to this issue. Affected and fixed versions =========================== Issue introduced in 6.16 with commit 270172f64b114451876c1b68912653e72ab99f38 and fixed in 6.16.2 with commit 7257cc6644d540130a46a61531a07a0517cace89 Issue introduced in 6.16 with commit 270172f64b114451876c1b68912653e72ab99f38 and fixed in 6.17-rc2 with commit 4126cb327a2e3273c81fcef1c594c5b7b645c44c 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-2025-39741 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/xe/xe_migrate.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/7257cc6644d540130a46a61531a07a0517cace89 https://git.kernel.org/stable/c/4126cb327a2e3273c81fcef1c594c5b7b645c44c