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 88DAC442392 for ; Wed, 26 Aug 2026 14:40:41 +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=1787755242; cv=none; b=COA5cXL3lXEJa6ss7X3D0d0JzwUNl74wQvACWd8PAWWmwWlTMn2jkWDrYP3K8JN5MfjVrrUmxCSVxcwb8h0sZ7GKq02f7SXbfkhg7IjTt1jWjRmzgpdsC6G5UWV4sKwozx/9BSJ4mUFY6VEJy9i0WfbiOqqjzpHoT7B1Sg5u5Dk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787755242; c=relaxed/simple; bh=lr0i1qMcthhNvvN5tmy2RNcLsN9EWJnq0f7rdNBdJDk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=KCj3TJCuw7uKqwH77ryZXoPZqELzb1UXEv2tYiQRg1HZ7IDC6yiJ0BwPdB7+UjkXueA2ypBIuyChimkLXqvPdRO70V8AgiQgfAu1EZW/X5g7y4qa/ESsLmhrziruuLoIVe7to+96hdYhKabHehyXPbySXs0Iwp10pr7CZitiBGM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=TSSsdmkn; 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="TSSsdmkn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AD77D1F00A3A; Wed, 26 Aug 2026 14:40:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1787755241; bh=yNQvYENicHyLEJaP4sbXAabLzpteAfWrVM4qverR61M=; h=From:To:Cc:Subject:Date:Reply-To; b=TSSsdmknxNeTWTiWQ8WfoQ/XYSzOIG34GGnTkGfY/Z3Eak7mvrT4wFHEPs68MQRfv HUaJ1JriSIfSaXe69R9+Y1rVjeE8+qVae5r7PFf6Bk6Q+VxFBeqP6yRTVRb4BPX5je DJkuCMvSRoEpk3C8J5Hn44fcCMHpV9/u6bvI5zxk= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-80574: Input: focaltech - fix array out-of-bounds in focaltech_process_rel_packet Date: Wed, 26 Aug 2026 16:38:10 +0200 Message-ID: <2026082613-CVE-2026-80574-72f3@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=3434; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=jVSoLmuGS0Yk+e5TRr02f3pH+fSRfYAOM4Aeq8wtPbM=; b=owGbwMvMwCRo6H6F97bub03G02pJDFl9vySf7P6y5PlphX0sM7OM5Xpmnb+0jofjvOmVe7PZd P/4LpxwrSOWhUGQiUFWTJHlyzaeo/srDil6GdqehpnDygQyhIGLUwAmsouDYcGmU81RhgK79FsU 8rMUQqS9ph45Is8wV7TdiumkqLFmYoRU3ewtuhzPJkgXAwA= 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: Input: focaltech - fix array out-of-bounds in focaltech_process_rel_packet Make finger2 (and also finger1) unsigned, so that if the finger index in the packet is 0 then subtracting 1 creates an array index which overflows above the existing check for FOC_MAX_FINGERS, as the existing comment says it should, instead of writing to state->fingers[-1]. The Linux kernel CVE team has assigned CVE-2026-80574 to this issue. Affected and fixed versions =========================== Issue introduced in 4.0 with commit 05be1d079ec0b3691783e4384b1ada82149ff7d2 and fixed in 5.10.266 with commit 063b4c6a6f3fc01bca085c442000c9c100fdbd93 Issue introduced in 4.0 with commit 05be1d079ec0b3691783e4384b1ada82149ff7d2 and fixed in 5.15.217 with commit bb502d79acb9ac1e0a77fa8bc7b7b4729140b11f Issue introduced in 4.0 with commit 05be1d079ec0b3691783e4384b1ada82149ff7d2 and fixed in 6.1.184 with commit ca92c98b806839c108995b2bbff7061515bdfb53 Issue introduced in 4.0 with commit 05be1d079ec0b3691783e4384b1ada82149ff7d2 and fixed in 6.6.153 with commit 81b07470cb2937ceb74b00be88151582a322433b Issue introduced in 4.0 with commit 05be1d079ec0b3691783e4384b1ada82149ff7d2 and fixed in 6.12.105 with commit 6f6d5fe29efdf5001bc146fc292e6592cace93eb Issue introduced in 4.0 with commit 05be1d079ec0b3691783e4384b1ada82149ff7d2 and fixed in 6.18.46 with commit 83c265bfc084d77e2171d4b67362150ab38c935b Issue introduced in 4.0 with commit 05be1d079ec0b3691783e4384b1ada82149ff7d2 and fixed in 7.1.10 with commit 1842e47126816e56d30c4f856f9854fd7831066c Issue introduced in 4.0 with commit 05be1d079ec0b3691783e4384b1ada82149ff7d2 and fixed in 7.2 with commit 296736076b3fd078742651c719555a488624023a 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-2026-80574 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/input/mouse/focaltech.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/063b4c6a6f3fc01bca085c442000c9c100fdbd93 https://git.kernel.org/stable/c/bb502d79acb9ac1e0a77fa8bc7b7b4729140b11f https://git.kernel.org/stable/c/ca92c98b806839c108995b2bbff7061515bdfb53 https://git.kernel.org/stable/c/81b07470cb2937ceb74b00be88151582a322433b https://git.kernel.org/stable/c/6f6d5fe29efdf5001bc146fc292e6592cace93eb https://git.kernel.org/stable/c/83c265bfc084d77e2171d4b67362150ab38c935b https://git.kernel.org/stable/c/1842e47126816e56d30c4f856f9854fd7831066c https://git.kernel.org/stable/c/296736076b3fd078742651c719555a488624023a