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 BAFDA3EFD39 for ; Fri, 8 May 2026 14:25:15 +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=1778250315; cv=none; b=Gu/I1sCoqkAM+gFrRPkSBFleQDNe3cm5HW6n80eH3somr4VmdIZJw0TwUBh+FyxN4jSxs5msmmoLiAKmiWhBQXckYwubTXbCZ/TdiUXPPo0Aab+pMxM5HIaprE70EkroDQ+dynjzol4F7a8PVKqo2h3SRTK8i0DvG3CHiP116ko= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778250315; c=relaxed/simple; bh=j2yrwsoi7hcqG+KD86ff5NVf/fSeIgL/Pbq0mA+uU2k=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=E6oiv1VydQMo5lKJz81N1jRunY4tKugojRjqlh5J8VwY2iHulz0GkICLMTUlFCvOE0Rxe460F9aOGl1DhOjHijTCHL0KCkDv1/xnC1IdvJcvIL4rDbtMVJizoF1QQxgK308KyW3mCrgy+kBtfeKPM/PA5hk8A585nyciaQcaDeU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=cUt65Fkf; 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="cUt65Fkf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53C81C2BCB0; Fri, 8 May 2026 14:25:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778250315; bh=j2yrwsoi7hcqG+KD86ff5NVf/fSeIgL/Pbq0mA+uU2k=; h=From:To:Cc:Subject:Date:Reply-To:From; b=cUt65Fkf/uiyBLpK4wLvSZNnlf+78oRAZr93bJKnglUD6CoALu8l7miK6gJfRnyUc RyHJ0TqB76+PIY8niBJAxwLCFnP5DMfQdG/kH5j45nb+FKvt9D0P3ZkrhGuAdSacZ5 LmnLtPMlVs073u7onC3pM+n8a+OTQgbpEphKFObQ= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43429: USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts Date: Fri, 8 May 2026 16:22:38 +0200 Message-ID: <2026050850-CVE-2026-43429-70a3@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=3504; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=nxSx4fiurzDpgHR8uQr5zmgjib+Fafz9N8cHI30TnhY=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/P9ZZWxnN0S5boJYoK/p/777DZiytGTf2eCy7cS073 vX61tuXOmJZGASZGGTFFFm+bOM5ur/ikKKXoe1pmDmsTCBDGLg4BWAiWj8Y5kd+SBKLCb1emCB+ eMc17UMuxeqf3zLMMzDJrnZ5+0ZXafLFtUmypooVGyebAgA= 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: USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts The usbtmc driver accepts timeout values specified by the user in an ioctl command, and uses these timeouts for some usb_bulk_msg() calls. Since the user can specify arbitrarily long timeouts and usb_bulk_msg() uses unkillable waits, call usb_bulk_msg_killable() instead to avoid the possibility of the user hanging a kernel thread indefinitely. The Linux kernel CVE team has assigned CVE-2026-43429 to this issue. Affected and fixed versions =========================== Issue introduced in 4.19 with commit 048c6d88a0214757926f264823829e79154fcd4f and fixed in 5.10.253 with commit e14a0dcdf468c3ad616bb06696c7c64c36e736d8 Issue introduced in 4.19 with commit 048c6d88a0214757926f264823829e79154fcd4f and fixed in 5.15.203 with commit 7fa72c369c23c27d1f64883c1e276af950557fb1 Issue introduced in 4.19 with commit 048c6d88a0214757926f264823829e79154fcd4f and fixed in 6.1.167 with commit 72c0a063489be183cfb99e7050aaef503bdb6449 Issue introduced in 4.19 with commit 048c6d88a0214757926f264823829e79154fcd4f and fixed in 6.6.130 with commit 39bd4097292fd8564cf2cfba9356f8ab11e38d12 Issue introduced in 4.19 with commit 048c6d88a0214757926f264823829e79154fcd4f and fixed in 6.12.78 with commit 0535f84cb94c9d8bcba0a2a5b3fac81b7d97235d Issue introduced in 4.19 with commit 048c6d88a0214757926f264823829e79154fcd4f and fixed in 6.18.19 with commit 6cb7dc91f057dd8ce44f6caa2995d8e22784ed0a Issue introduced in 4.19 with commit 048c6d88a0214757926f264823829e79154fcd4f and fixed in 6.19.9 with commit d4f1c45bdff3f393f9ab7e76795901c442b9eb76 Issue introduced in 4.19 with commit 048c6d88a0214757926f264823829e79154fcd4f and fixed in 7.0 with commit 7784caa413a89487dd14dd5c41db8753483b2acb 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-2026-43429 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/usb/class/usbtmc.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/e14a0dcdf468c3ad616bb06696c7c64c36e736d8 https://git.kernel.org/stable/c/7fa72c369c23c27d1f64883c1e276af950557fb1 https://git.kernel.org/stable/c/72c0a063489be183cfb99e7050aaef503bdb6449 https://git.kernel.org/stable/c/39bd4097292fd8564cf2cfba9356f8ab11e38d12 https://git.kernel.org/stable/c/0535f84cb94c9d8bcba0a2a5b3fac81b7d97235d https://git.kernel.org/stable/c/6cb7dc91f057dd8ce44f6caa2995d8e22784ed0a https://git.kernel.org/stable/c/d4f1c45bdff3f393f9ab7e76795901c442b9eb76 https://git.kernel.org/stable/c/7784caa413a89487dd14dd5c41db8753483b2acb