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 98A1D35AC31 for ; Sat, 15 Aug 2026 06:12:41 +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=1786774362; cv=none; b=nMH8EUoyt+8do1ue39tW1/M6U7nXEpxjgT3vhDe6hcD+EkslfE8VPL4P7CU1i0d+d3SOcmnPLNZkpHJ3186ChVLT2IiAw5ZGvXq599edIjzSJrFQuF/uZvYrYJOeKDsTBCUbnAz+PzINjzIx+57yZTK2iPPbYBInam5DHVpMqlg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786774362; c=relaxed/simple; bh=z78OxiAWZCq5EyvZ2ERZGA2P/MQwt8MPs+wp+piJRAM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=nh5HnnIPlWNuiUFSYrzeFk4iwlqHT1GVCgrrdD9KbfT2zy8nhfDfo4RSK1Fpdt0sC5UYVCO6LrFJzxlGPSwqKwdq8A73B5Ch54Yv7CAipbXAkEklGhx/ToWSirNMxcPKkwSVAE+e3jbDgfkUMDAbBmLOSN3ugwDmsSkt9cfx9dY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=GRHDJIWr; 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="GRHDJIWr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E31191F000E9; Sat, 15 Aug 2026 06:12:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786774361; bh=VvAnoicV53kILc6NVuCNqw0WEovyptxTdcmgvgf8ldw=; h=From:To:Cc:Subject:Date:Reply-To; b=GRHDJIWrxxCx7G11TAzMNmKVRlvl7zSKbK+cz3loGCZxUoZ3OxTNTsPocGMQzqSn8 +6WQrtgO7amiN1xQDyNNPeqL5vmJWmI3FzIAfoWDU4BJwV1/oLlx7iLqTyV/74vcyi U5thKmIT09sB/U7/5rBdrIOn1Q5LVazkEsrbYX+E= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-72090: accel/amdxdna: Use caller client for debug BO sync Date: Sat, 15 Aug 2026 15:02:49 +0900 Message-ID: <2026081522-CVE-2026-72090-0f1d@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=2303; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=mgqESriJ07KJ5LYvMIoedhZ4h3fvx1888ozvRN0ry6I=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNDJts/3VMelH07BVj2coKnk329w5Kzt+6tkfXbOuP7 FJd5XMnOmJZGASZGGTFFFm+bOM5ur/ikKKXoe1pmDmsTCBDGLg4BWAid6oY5soai8z/9DHF6m2+ ke02J5Hpu8WUghgWXGCYMv+bc3X3MYb7viqLdS9euZ9bCAA= 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: accel/amdxdna: Use caller client for debug BO sync amdxdna_drm_sync_bo_ioctl() looks up args->handle in the ioctl caller's drm_file. For SYNC_DIRECT_FROM_DEVICE, it then calls amdxdna_hwctx_sync_debug_bo(), but passes abo->client. amdxdna_hwctx_sync_debug_bo() uses the passed client both as the handle namespace for debug_bo_hdl and as the owner of the hardware context xarray. Those must match the file that supplied args->handle. The BO's stored client pointer is object state, not the ioctl context. Pass filp->driver_priv instead, matching the original handle lookup. The Linux kernel CVE team has assigned CVE-2026-72090 to this issue. Affected and fixed versions =========================== Issue introduced in 6.19 with commit 7ea0468380216c10b73633b976d33efa8c12d375 and fixed in 7.1.5 with commit 216e43d93dd49ec253052741aa476e51a8c54cd8 Issue introduced in 6.19 with commit 7ea0468380216c10b73633b976d33efa8c12d375 and fixed in 7.2-rc1 with commit 7caf2a2351d4053075670ff3e26a6815da0a9e1e 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-2026-72090 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/accel/amdxdna/amdxdna_gem.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/216e43d93dd49ec253052741aa476e51a8c54cd8 https://git.kernel.org/stable/c/7caf2a2351d4053075670ff3e26a6815da0a9e1e