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 785224E8DFA for ; Wed, 16 Sep 2026 10:33:32 +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=1789554827; cv=none; b=oYJjxNOKSHrJ9HjkiEqx4v0330Aw/oWXVZ2zl+euQrG77Sntbb9WCSBAyvyTwCS/WQzwYTHkOkz9XPeVsqn5wHDitFSLA3nSUafisGATlnsx/UfNhzet7Al6FdQQnq6flUImxy6X+S6W+o3Jft2A41bwesOKvJlEYebXJd0VicU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789554827; c=relaxed/simple; bh=XBx00qyTib00r7JUezTnwvt0SYcvy99rdHD8XlycjOQ=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=V7oIgX/TZQCW+2Aos6UgKlgAIdBYGEw+07zuTbIOpxtMGpXFEy+LMjZfJTCDqFnMHfQe15qdaZPRh8SjHyhS8fe7jiId3Iklb2DCONuVxjNIFFD3Rt/cwqMz70PdsV7SrshjA48V/dRnYGWNTZL41REJJQVHOY8VMRmFYHhw5m8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=lay8BKPa; 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="lay8BKPa" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 25E1D1F008A1; Wed, 16 Sep 2026 10:33:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789554810; bh=QPdu1LUrT2gu5W7Pvn3uzctKvni0VDlR/fTT+V0kVcY=; h=From:To:Cc:Subject:Date:Reply-To; b=lay8BKPaT69MsUDIse/kq9VLZnQvKFOfuU45Z5Zc6oATDT10U7CSV3P/PJ50XlU0l ilDKLPs11WmmZ3+/CrxNSdhHLSLP7n+LzrNh8q5rsQpX4PklDaY+O8Qts0mpgAIJ2g VsJ3M1+H3a2nPuqUqj3Slnrk8ymmsEKp6QZfXTdw= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-89813: drm/amdgpu: force complete the KIQ ring fences on reset Date: Wed, 16 Sep 2026 11:29:03 +0100 Message-ID: <2026091657-CVE-2026-89813-e767@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=2093; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=0Srbtiw1N+dcDgr++JZtbypr9n2fIPT+tU3QCW2iHjY=; b=owGbwMvMwCRo6H6F97bub03G02pJDFmr8jNTKz6ttmP+aXOuZ6vQxnhn3Wt/jB/v//Xk9/4Ct 1+bWiNzO2JZGASZGGTFFFm+bOM5ur/ikKKXoe1pmDmsTCBDGLg4BWAi+gkMc/h316qaRCdYyfXM 3ZbyaeVrEftWPYZ5tjNcuTtP5jN/3N8/KSfZNrWO45oFAA== 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: force complete the KIQ ring fences on reset Like the MES scheduler ring, the KIQ ring sets no_scheduler = true and uses a polling fence, so it is skipped by the force-completion loop in amdgpu_device_pre_asic_reset(). Its hw fence value lives in wb (GTT) memory and survives a MODE1 reset while fence_drv.sync_seq keeps advancing, so after a reset the first KIQ submission can poll forever on a seq that is never written back. Force complete the KIQ ring fences too so their hw fence is realigned to sync_seq. The Linux kernel CVE team has assigned CVE-2026-89813 to this issue. Affected and fixed versions =========================== Fixed in 7.2.5 with commit bdd6a58743e00ebc6d52b9cdf9aafb4e535e0b71 Fixed in 7.3-rc1 with commit fd65d1742992361fc2201ecb4e43411e6e417fcb 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-2026-89813 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 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/bdd6a58743e00ebc6d52b9cdf9aafb4e535e0b71 https://git.kernel.org/stable/c/fd65d1742992361fc2201ecb4e43411e6e417fcb