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 5688444C4FB for ; Fri, 11 Sep 2026 19:46:32 +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=1789156003; cv=none; b=YxMGbSvPzL1HfFPonuxlmseP4IWj43DHq7JpfXPptVdyi1qPfhkIGkV7Ahy2MAR7pXcsluB+rah34b2Hu9TSp/C88/7kq8UtNJDOtvtrDk22MiHBDpoE9traltfJW8E666kszS2IOh4f8h3EZlu1PtMxCHkMzzJnugNSmlUSgg8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789156003; c=relaxed/simple; bh=+PFBtqIBiuYXxsRG+RSNrS68pzukZkDMkH0Q1Yf3k/k=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ayEMuZ4NApuxXwKRMf4rmQmtSEbb6Xob3s++UG1dlYyPaQSUnUf8TjHf6r7H9W7+mn7poOj9COn3VESVY1DtgR9sQTXa913nfIMy57tluqVeGlhtA4wsc05ODXnONA07MJJamYMdaHvVc45PM8oL2UR6UnKM1OrjGbsmPCcTw8Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=t2QmyNKU; 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="t2QmyNKU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AC9811F00898; Fri, 11 Sep 2026 19:46:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789155991; bh=E557nhCcavmlVBqhHL91YTbC2s3L2a5TY0TcqD9YRkI=; h=From:To:Cc:Subject:Date:Reply-To; b=t2QmyNKUMV8lPp1S3mQvYDUgO+8YRF1YsuC7nsOdEKJMjePBo4bQzv2K7y4taOEP2 CRJTjysAcOLiCwkthnc8GbQZc2yXpUcChz8Pl/rubEv906wmnJyDKBo3YAVDCJBO9e /3Ip0gluc/y3AvU20pA88RFYSDv29dJAvm/9+fxE= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-80950: i3c: renesas: Check that the transfer is valid before accessing it Date: Fri, 11 Sep 2026 21:40:56 +0200 Message-ID: <2026091139-CVE-2026-80950-9da2@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=2633; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=3vuNw1mLPKUYYHEgO33PQaJQxlA1B0h6FXD/lMtvZoo=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlLIs3Fjie+Llq5KNryymbRNymZCew7z7MxWGqxMBirO vmdE+LoiGVhEGRikBVTZPmyjefo/opDil6Gtqdh5rAygQxh4OIUgIn4JjPMFYl9tHj2HCEH4bLW O7v5nM9znecSY1jQUVzJK1thUCH0ucJ3be/ejcdsp54FAA== 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: i3c: renesas: Check that the transfer is valid before accessing it The Renesas I3C driver uses an asynchronous model to transfer data. It prepares a struct renesas_i3c_xfer, enqueues it, and waits for completion. The interrupt handler dequeues the transfer, updates/uses it, and signals the waiting thread. If the completion times out, the waiting thread dequeues the transfer and free it. If an interrupt fires after that, the handler may access freed memory, leading to crashes. Check that the transfer is still valid before accessing it in the interrupt handler. With it clear any status flags and disable all the interrupts to avoid triggering the same interrupts again. The Linux kernel CVE team has assigned CVE-2026-80950 to this issue. Affected and fixed versions =========================== Issue introduced in 6.17 with commit d028219a9f1485914492bf373406f6a0e665ace2 and fixed in 6.18.50 with commit 0093f9fc102ba8b98561fdd2f8559553ef56be59 Issue introduced in 6.17 with commit d028219a9f1485914492bf373406f6a0e665ace2 and fixed in 7.2.4 with commit ec631aff93261c6d031f953549802322032f2aba Issue introduced in 6.17 with commit d028219a9f1485914492bf373406f6a0e665ace2 and fixed in 7.3-rc1 with commit 5f1a76ecfe90544a28d657306c9b3caa66ba0e63 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-2026-80950 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/i3c/master/renesas-i3c.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/0093f9fc102ba8b98561fdd2f8559553ef56be59 https://git.kernel.org/stable/c/ec631aff93261c6d031f953549802322032f2aba https://git.kernel.org/stable/c/5f1a76ecfe90544a28d657306c9b3caa66ba0e63