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 4749C3803DB for ; Fri, 8 May 2026 13:39:41 +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=1778247581; cv=none; b=GVmsN0fwzHELxZCb8HjCWpl6tog9NLkIpxwJUux6BbOGekT0RUQ/09lbNRWoCHWT+Li4q5A1OwI9Tr5ToMkWy1v4cknJ8GACjIWRflDr5ClVSxIpIMmK6O9DP6uU7kOZX+LFClgOiGfeH1HztOKBw7E6FIyXAuK6FjKbYtqgBXk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778247581; c=relaxed/simple; bh=Bz7PxadpbG7spBcbqeSpTAUzHM5cJDjWhcYBz/OF8/A=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=U3RwZUu9jv7WqaKsLpBiK6Tph5y/f3kk4kYMjOU+85Z9XDlN1qzIV9lfT5Nepb3LGdbeFVV9jPZE6PF2OuqT6zkjQNt76HSvGZ7LgdDEwv/9ySd8kjPPqh1l/5Y5UwW6Wo/3RH3eMvtBoL0ZGx5bpecnrha1+uC4KSFhLi+l+o0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Ulj/vZyX; 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="Ulj/vZyX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9C754C2BCB0; Fri, 8 May 2026 13:39:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778247581; bh=Bz7PxadpbG7spBcbqeSpTAUzHM5cJDjWhcYBz/OF8/A=; h=From:To:Cc:Subject:Date:Reply-To:From; b=Ulj/vZyXknbkDDp6GZRdCLp7GzVadsGBvsYAw0umP6Lxa8XAOIoWCtbMiQbi2/9Lx 7wRDhGi28l/g5kncwIUOtl3ZN67PiQxuzuLkZKRmiJt5djCAkBJQDUjwfyePd80ot7 siVyCJsZdtuFDgZPUw4GNMFNQ3kobvihMtvqtaik= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43345: net: ipa: fix event ring index not programmed for IPA v5.0+ Date: Fri, 8 May 2026 15:39:36 +0200 Message-ID: <2026050837-CVE-2026-43345-3cfe@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=3064; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=iArKe/Uas/Wk0t11O/n92xle1mhh319l32w226GpvWc=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/n8+0ezbjzQTzBvXQ/2+UC+ddL3HX7ksvO/cpwfLZu Wf7bfdv7ohlYRBkYpAVU2T5so3n6P6KQ4pehranYeawMoEMYeDiFICJ7G1kWNC6+1bVr+sRc3fr xZ98tnFy+19fyxcMc3hX8k5j0+v7v2/TXweu6er624//KQcA 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: net: ipa: fix event ring index not programmed for IPA v5.0+ For IPA v5.0+, the event ring index field moved from CH_C_CNTXT_0 to CH_C_CNTXT_1. The v5.0 register definition intended to define this field in the CH_C_CNTXT_1 fmask array but used the old identifier of ERINDEX instead of CH_ERINDEX. Without a valid event ring, GSI channels could never signal transfer completions. This caused gsi_channel_trans_quiesce() to block forever in wait_for_completion(). At least for IPA v5.2 this resolves an issue seen where runtime suspend, system suspend, and remoteproc stop all hanged forever. It also meant the IPA data path was completely non functional. The Linux kernel CVE team has assigned CVE-2026-43345 to this issue. Affected and fixed versions =========================== Issue introduced in 6.4 with commit faf0678ec8a0aa9039d8b188d012206abd67dd5c and fixed in 6.6.136 with commit ae8343a19ccb051d519dbb3a9082ddea9f0551d3 Issue introduced in 6.4 with commit faf0678ec8a0aa9039d8b188d012206abd67dd5c and fixed in 6.12.83 with commit 2bf18b643c4656413f7cfd5615af60a6b4e261da Issue introduced in 6.4 with commit faf0678ec8a0aa9039d8b188d012206abd67dd5c and fixed in 6.18.24 with commit 2d2dc166d55148cfcf8ae67b415f8d6d110e6fca Issue introduced in 6.4 with commit faf0678ec8a0aa9039d8b188d012206abd67dd5c and fixed in 6.19.14 with commit 34c988bb04cbdf093d2134e179433da49ffcd044 Issue introduced in 6.4 with commit faf0678ec8a0aa9039d8b188d012206abd67dd5c and fixed in 7.0 with commit 56007972c0b1e783ca714d6f1f4d6e66e531d21f 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-2026-43345 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/net/ipa/reg/gsi_reg-v5.0.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/ae8343a19ccb051d519dbb3a9082ddea9f0551d3 https://git.kernel.org/stable/c/2bf18b643c4656413f7cfd5615af60a6b4e261da https://git.kernel.org/stable/c/2d2dc166d55148cfcf8ae67b415f8d6d110e6fca https://git.kernel.org/stable/c/34c988bb04cbdf093d2134e179433da49ffcd044 https://git.kernel.org/stable/c/56007972c0b1e783ca714d6f1f4d6e66e531d21f