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 605A5494A04 for ; Fri, 25 Sep 2026 10:32:56 +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=1790332377; cv=none; b=lNozRJ2/O6IDkSRFPVM2pKh49qHsOhRjyFwwkJ7xbonHVP0mbf3/blGOt+OY1P6GqPFFjGXCEC99y047/hr+FzKRkoZD32XHg3ly87h7sxmylM11gFhQRvE23icL33bBhotRMZ1vtJfIRedL9pbdLMdgRr6zP0LxP2VtJdHKmHY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790332377; c=relaxed/simple; bh=pC4uDB8J4YSHmvjr3bqLukio7T6fPq2sb1f90G1x510=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Kq2p1r5wmsOQlhR4ICLifgea8C6p3JCg+k13igbW2j4wyaRBEcSXNO+SfAQ8MMj9RLQpMIEmZTXhYXY7svPBdmcUgFUS5JdYlIXOnTq414s0G8vweGIRfrU88KAo4AMmsiB9yDBYSgzdcErIaIHmT5U7RAh98YCuk2ijdXrt09U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=COXICeY/; 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="COXICeY/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB6FD1F00893; Fri, 25 Sep 2026 10:32:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790332376; bh=+l/MyiBiJu2PFIa1Ov3/5LBWFOFAsCzMAi5A18CSu14=; h=From:To:Cc:Subject:Date:Reply-To; b=COXICeY/iKbHYw+lFcnClWSjTfieoW+FM+uUUNSCBEKtEg5g4LcfoYXDU5HJBA9M6 Tyc0WmlGiM+Gq4RP8P7T4p0O+N7wAy3nWHsVcYMSPtovRPcf+Myp1o1chb/tEhvk0b l8ZlJeMDuY9opTplQj2ZFe2bFbi5FHr6m6WEI4yI= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-98016: net/mlx5e: Fix use-after-free race in sample_restore_put() Date: Fri, 25 Sep 2026 12:25:18 +0200 Message-ID: <2026092526-CVE-2026-98016-e47c@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=2593; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=ZflIbKwCqy+rHfhT2ni0l/7eDS6vaCcusRnTJxfeac4=; b=owGbwMvMwCRo6H6F97bub03G02pJDFnbvJOydEUt2ENuPxOx09pmU2NVlz6zaMU2EV/mzX+jd nOxrd7eEcvCIMjEICumyPJlG8/R/RWHFL0MbU/DzGFlAhnCwMUpABOZ8J1hQctDnu0TasQ7bO/Y voj3OVKqf0brHsM8ne6lClYKQUsP7ao/MnGXU6LWhHA3AA== 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/mlx5e: Fix use-after-free race in sample_restore_put() Concurrent teardown of TC sample rules sharing the same restore context may re-read restore->count after dropping restore_lock. At that point another thread may already have completed cleanup and freed the restore object. Use the result of the refcount decrement while holding restore_lock to determine whether cleanup is needed. The Linux kernel CVE team has assigned CVE-2026-98016 to this issue. Affected and fixed versions =========================== Issue introduced in 5.13 with commit 36a3196256bf3310e5e7142b0e61787f7a201abd and fixed in 6.12.111 with commit 3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a Issue introduced in 5.13 with commit 36a3196256bf3310e5e7142b0e61787f7a201abd and fixed in 6.18.53 with commit 72324da8eeca269db9196c2a555abf72eb0385c5 Issue introduced in 5.13 with commit 36a3196256bf3310e5e7142b0e61787f7a201abd and fixed in 7.2.7 with commit 1daecd76ab9e5f055fe3970462410ad1d40bd177 Issue introduced in 5.13 with commit 36a3196256bf3310e5e7142b0e61787f7a201abd and fixed in 7.3-rc3 with commit af3aef0245abbab5e9f6302e7a7d6407187afb71 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-2026-98016 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/ethernet/mellanox/mlx5/core/en/tc/sample.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/3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a https://git.kernel.org/stable/c/72324da8eeca269db9196c2a555abf72eb0385c5 https://git.kernel.org/stable/c/1daecd76ab9e5f055fe3970462410ad1d40bd177 https://git.kernel.org/stable/c/af3aef0245abbab5e9f6302e7a7d6407187afb71