From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 85DF540F753 for ; Thu, 3 Sep 2026 08:22:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788423746; cv=none; b=LsraXIHY/5uEN7QBOb96pEq0/77in0MCbSbj1FOAfbmLo9f3iIF4VsZSqBryRKr5R8NZlvoLigAGJDY3KJhM9fWvoE3hZSoWm96Pz0CtIy3Kbu+6TrR6JBZ9okZdEzRqId2TFWDKXFJ+fAwx/fJv+PP2qFPenQhjHS2Vobmeeus= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788423746; c=relaxed/simple; bh=VoNvNnRRiFRM/nP/ZUs8SB5eXQUpDni13ZiYXgz5OBs=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=CUE6lhg7pJZ/KeO5TzwA6HkBZPCBnUiaep6zuoX6Cda8ZkFCAJ1eHiX1RSw7k3a3V0c7nP3W3/EMZP2USvt+eBtWs1yPx5t4k+0Q0WB4Ctv2ZBts5ZSmDo6xK3V2ITBzbz//XLJAhiimlROZ8DE31q7O4xvgqlQjzaRl/pkR2OA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Yt8l6pP5; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Yt8l6pP5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8313A1F000E9; Thu, 3 Sep 2026 08:22:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788423745; bh=/St2XRTnj6QWq3nNwSifpJzvvKQDWX3ynh2gBjXQo3o=; h=From:To:Cc:Subject:Date:Reply-To; b=Yt8l6pP5r6ypBcV1uvy2PcCSMqeCK1RiRz4gH1iMwSSzWVs+VLdh5oDT4qkCm4BQ5 ZzEc1cnz8tVsYnjBG5c1CyJscMs7YEPA/IMXXgCYhvvXMmlJeVUW67LBTiy8Ifeqjb itYUPsXs7CzrGcsko1GGchIBeUwlvo176d6u1y3M= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-80728: Revert "drm/amdgpu: fix aperture mapping leak" Date: Thu, 3 Sep 2026 10:21:57 +0200 Message-ID: <2026090357-CVE-2026-80728-52a5@gregkh> X-Mailer: git-send-email 2.55.0 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=2827; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=NaL+FhYg5xGVizXj++n7mHwjX7Lu4eJXi6mQRPti1as=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkz9VQtu37q/Pp6tfz+yYiY7usbbm1XV9Xl5496nb2/y dNv6vY3HTEsDIJMDLJiiixftvEc3V9xSNHL0PY0zBxWJpAhDFycAjCRPkOG+SFBAk6dUV+2B239 86vi3/yFN/kjqxmmF8aHZm19dONawFceR4Z5O/u1VyoBAA== 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: Revert "drm/amdgpu: fix aperture mapping leak" devres teardown is LIFO. The aperture devres node was registered after the DRM device node, so devres_release_all() unmaps the aperture before the DRM device release callback fires amdgpu_device_fini_sw(). IP sw_fini callbacks (e.g. vcn_v4_0_sw_fini) write to fw_shared through a pointer derived from aper_base_kaddr, causing a kernel page fault on probe failure / rollback: BUG: unable to handle page fault ... PMD 0 RIP: vcn_v4_0_sw_fini+0x7b/0x170 [amdgpu] Call Trace: amdgpu_device_fini_sw amdgpu_driver_release_kms devm_drm_dev_init_release devres_release_all This reverts commit d871e99879cb5fd1fa798b006b4888887e63a17a. (cherry picked from commit 336e0cd576817ac64a4b394ca2b3680029f3e37f) The Linux kernel CVE team has assigned CVE-2026-80728 to this issue. Affected and fixed versions =========================== Fixed in 6.6.152 with commit 7380f1bfe9d7ed3a4ca9d99a5c4df840fff9af2a Fixed in 6.12.104 with commit 96d26143882f9cb47dcc1f3dd4e26d047e53ab9b Fixed in 6.18.45 with commit a2e326c52c4bcecc033cd3ca2733fdbe30fbf55d Fixed in 7.1.9 with commit 496846a9411136eb9e86ad4f4e62d751bd1e1db5 Fixed in 7.2 with commit b96c529cd2551b78316a4afa3237b2ed96ba03c8 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-2026-80728 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_device.c drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.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/7380f1bfe9d7ed3a4ca9d99a5c4df840fff9af2a https://git.kernel.org/stable/c/96d26143882f9cb47dcc1f3dd4e26d047e53ab9b https://git.kernel.org/stable/c/a2e326c52c4bcecc033cd3ca2733fdbe30fbf55d https://git.kernel.org/stable/c/496846a9411136eb9e86ad4f4e62d751bd1e1db5 https://git.kernel.org/stable/c/b96c529cd2551b78316a4afa3237b2ed96ba03c8