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 8BA5C3F4DDA for ; Sat, 15 Aug 2026 12:33:37 +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=1786797218; cv=none; b=CKrbYnXLB2n0NdH4zu9HwJ5pHRarMRTQdHmBFtKX/Dz6cUK5Qg2qaJWWPNDquIARBUZhWNP0WEtZBDHB42Ff93lwztTh/T2z7Kyhxaa/lIa288augzth5oGOhsMwCOO6oEK93KBIp52ECOokqvCngqiTXyXD1sMGwxxHkaPdRKw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786797218; c=relaxed/simple; bh=UPxpo4bIHtOZmeJatHuleUmzNiU5ybxn7cbwkiGqVgY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=CcootcmOI/Ai53F0p1VRHLOXRgu+PGy3JoSWSuh6ZUH9bTGX9Tbl96vXC7Er/1U4iOX8yLzsfNIUVVETOz7Fkkt1A+Ed0T3dItGHcggO/FCqYiF+PbMlULL3cc5rne8zG+s0cDYyCB/rVC+QaKpOh6qWrSPa/k1x5DYnuWXlS/U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=tj/rCJhS; 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="tj/rCJhS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ABD8B1F000E9; Sat, 15 Aug 2026 12:33:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786797217; bh=dcbw2vZXdDQnW/yzSvRuVTi7Ti75YscMwOhvSVW9vT4=; h=From:To:Cc:Subject:Date:Reply-To; b=tj/rCJhSRKor35qy/kDx6W0afzrXGJII8ftSJf+QnCIxPnjYm4PFZL0XiF85NumfK NwXnfflUWbeISoqoKroYXfAJOTzWLzzzJvf5OYVLkl6LjpYT6/Y09RO2DLFkWHkfds aI4Nv3BY9gib90Al3gdRcjp2n3Xy3TF7msc3cWbs= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-74570: ntfs: harden runlist realloc size calculations Date: Sat, 15 Aug 2026 21:27:31 +0900 Message-ID: <2026081554-CVE-2026-74570-2b8b@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=1913; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=4DnYGp4A8/XLm2UW+t3dI2GI/WugcRbnSFAoHtLSTg4=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNUZfOvI35zeFwg3X7TrGko1oMyef5b840NjxbssmqQ /XJ6bKcjlgWBkEmBlkxRZYv23iO7q84pOhlaHsaZg4rE8gQBi5OAZgIjwDD/OJD/T/ddzoE5R6M PLes9F/Cq6rmDQwL5vx481V4k5r3hB0TN81vyrsXdCz4BwA= 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: ntfs: harden runlist realloc size calculations Add a shared helper to safely convert runlist element counts to byte sizes using overflow checks, and use it in both ntfs_rl_realloc() and ntfs_rl_realloc_nofail(). The Linux kernel CVE team has assigned CVE-2026-74570 to this issue. Affected and fixed versions =========================== Issue introduced in 7.1 with commit 11ccc9107dc460de28af90fac1f42404d9802735 and fixed in 7.1.8 with commit 57e7b8bf7b02a0140463fea786e5172cbdf2da2f Issue introduced in 7.1 with commit 11ccc9107dc460de28af90fac1f42404d9802735 and fixed in 7.2-rc6 with commit 8bed376124ab4505b70083a2b91f2c7ef6d51e24 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-2026-74570 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: fs/ntfs/runlist.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/57e7b8bf7b02a0140463fea786e5172cbdf2da2f https://git.kernel.org/stable/c/8bed376124ab4505b70083a2b91f2c7ef6d51e24