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 1A0663E7148 for ; Fri, 8 May 2026 14:22:47 +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=1778250167; cv=none; b=aeojNfQRbNYJ7WcztKZaqdEFZgIw3CPSaAhirFIivipqknPUqr8b+3riHge38xRhnopp6pyQhUsoZotd1RyZDHHP7ZKURJ+ax+T5w6A0GuTU/wCLuYM3IpxbZ6KGrP7rR0sm0l6SqAAmdNFXGxHDowWxzAKMyyB0+0JmiqxBhnw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778250167; c=relaxed/simple; bh=qba69zaJqr43XPBHnFbaJrkKo5wBj8HjAEFaDV6a4Eg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=CXMqIfa8bosbd1sEysbZOP0BibMYWVbB8TSA6m1hDwZJyUvzJV50D/E1/3qhYamGd0SPdh47I5EusA395w1MEfCPnWdEAekiGR4SCxTF9iIabuzP/a1W+2O1IS6+GAFOj2fNJiH5Jacpyoq4g9xp1PZcfGOcY4ZwFJK2hRzyTc8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=y8yayIza; 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="y8yayIza" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 935BEC2BCB0; Fri, 8 May 2026 14:22:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778250166; bh=qba69zaJqr43XPBHnFbaJrkKo5wBj8HjAEFaDV6a4Eg=; h=From:To:Cc:Subject:Date:Reply-To:From; b=y8yayIzaxcpim3X/UHIevQw8I3xY5W4oIyJBUC6Cgzcf917wG4o3hTxCHlUt+wqwA kj92lJdJv6PjciKhZP+Knu+13sgIdDrYzmynPlVEBRQH0Assyg+vAVB06foA+QFol/ 8k91hpWdnqrb0JKqTqN+IATOSg7proEmsoK0n/+Y= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43370: drm/amdgpu: Fix use-after-free race in VM acquire Date: Fri, 8 May 2026 16:21:39 +0200 Message-ID: <2026050829-CVE-2026-43370-4d49@gregkh> X-Mailer: git-send-email 2.54.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2744; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=doG/jRm00YqkBnNLghMsYROwNDJ1da+ZBOkIf69tS1o=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/P2ZeSipWkQ2zZylaEHK9xnmpJ+OGpjszHdSOulzf6 p679IVNRywLgyATg6yYIsuXbTxH91ccUvQytD0NM4eVCWQIAxenAEzER5ZhweIvOte+q5wNX/3i Yk9mvw5byKFjnAzztGatqsuddqMmQVnpdK7Ght6Tt4UVAQ== 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/amdgpu: Fix use-after-free race in VM acquire Replace non-atomic vm->process_info assignment with cmpxchg() to prevent race when parent/child processes sharing a drm_file both try to acquire the same VM after fork(). (cherry picked from commit c7c573275ec20db05be769288a3e3bb2250ec618) The Linux kernel CVE team has assigned CVE-2026-43370 to this issue. Affected and fixed versions =========================== Fixed in 5.10.253 with commit ae87aea330c24f462fc7058ed543ba8bc6798447 Fixed in 5.15.203 with commit 46d309996bd9251792d7dafdbaf615cf202b4447 Fixed in 6.1.167 with commit e61e355cbe49e585097eee28c15b862bfb1c0668 Fixed in 6.6.130 with commit c658c1c85ec235b7ecfbf8dbfee385b1332088f4 Fixed in 6.12.78 with commit 904025fa8bba1d028adade33346372b4ac1a9249 Fixed in 6.18.19 with commit 7885eb335d8f9e9942925d57e300a85e3f82ded4 Fixed in 6.19.9 with commit 94b7782d0c8024f5b88454241c8d4777076c3786 Fixed in 7.0 with commit 2c1030f2e84885cc58bffef6af67d5b9d2e7098f 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-2026-43370 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/amdgpu/amdgpu_amdkfd_gpuvm.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/ae87aea330c24f462fc7058ed543ba8bc6798447 https://git.kernel.org/stable/c/46d309996bd9251792d7dafdbaf615cf202b4447 https://git.kernel.org/stable/c/e61e355cbe49e585097eee28c15b862bfb1c0668 https://git.kernel.org/stable/c/c658c1c85ec235b7ecfbf8dbfee385b1332088f4 https://git.kernel.org/stable/c/904025fa8bba1d028adade33346372b4ac1a9249 https://git.kernel.org/stable/c/7885eb335d8f9e9942925d57e300a85e3f82ded4 https://git.kernel.org/stable/c/94b7782d0c8024f5b88454241c8d4777076c3786 https://git.kernel.org/stable/c/2c1030f2e84885cc58bffef6af67d5b9d2e7098f