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 4B16131ED81 for ; Sat, 15 Aug 2026 06:15:40 +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=1786774541; cv=none; b=jf6eCZ+6XdUA+yKBz4D5yG/ii6S1CXgAX8JDf1ZZuioUthMthRMdiFvtKxp6mq/lWKk5ZX3QLltZb/KGsz2aeQ1MLBuQtKzZ7NmqbSqQOGfpbJwxmS8aVwuM1hX9XEr+nQrBVGfuAFRqZdk7kJH9a2N/baqBTgnEFaYCIza8+9Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786774541; c=relaxed/simple; bh=+yAEDzbBuac52iWRfNAVF35W50AIwmU9CLlaIkU4IAU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=kuBFBCQxNO0ymZSIMJSNWSuXQUFQ2EECHuY5kEFseMZR1IGZspxTfegmrjpgk58i9P32fiY1xn6d5SLnNYl0jwtSWrNHOGYPGBRsvNxb1WwCHEoaaDQoK41ZIQc9Hhm1fuxA6rOjtRwSNEWT8nzVepjrbXV3qEViKJ9oHcht8Ms= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=FzD16hDw; 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="FzD16hDw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5D3351F000E9; Sat, 15 Aug 2026 06:15:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786774539; bh=61PSWUro1Qkdr9EoTLv93A/DbHu46MRQhYD67DbDOWU=; h=From:To:Cc:Subject:Date:Reply-To; b=FzD16hDwHt1mfg5pq6NK9waG5Y1kIUmmBL/Ub01nRHTGnGcGbvSNcabKjBNsaklJ+ HrRfea+RzOaEorP8GbcC7Wb+S921nLwWCDLcqQwVYW0K+ucJo4/Xa7PgeOK4KzmInh j5k1QSeSRnikAoRu/4NvdNC6uojZ/fXu6p9yyoSc= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-72189: ntfs: fail attrlist updates when the superblock is inactive Date: Sat, 15 Aug 2026 15:04:28 +0900 Message-ID: <2026081541-CVE-2026-72189-3048@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=2702; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=iG521ESzE7AFhZUriKEDk8QOvQBmz+mENsP0uk/sIYA=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNDEe1C61Ppm0OCAsU4xecyr3uvJ36b1MtYVm+eXukF /btDdzXEcvCIMjEICumyPJlG8/R/RWHFL0MbU/DzGFlAhnCwMUpABM5y8YwP4JPPnqK7MMCvckz 2D36pbNCznRMYZhns3XNhCDb0ysfaetdmjnpkPAzBsNgAA== 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: fail attrlist updates when the superblock is inactive generic_shutdown_super() clears SB_ACTIVE before evicting cached inodes. If eviction selects the fake inode for a base inode's unnamed $ATTRIBUTE_LIST attribute, ntfs_evict_big_inode() drops the fake inode's reference on the base inode while the fake inode is still hashed and marked I_FREEING. That iput can synchronously write back the base inode. The writeback path may update mapping pairs and call ntfs_attrlist_update(), which unconditionally calls ntfs_attr_iget() for the same $ATTRIBUTE_LIST fake inode. VFS then finds the I_FREEING inode and waits for eviction to finish, but the current task is still inside that eviction path, causing a self-deadlock in find_inode(). Fix this by mirroring the teardown guard used by __ntfs_write_inode(): once SB_ACTIVE has been cleared, do not try to iget the attribute-list fake inode. Return -EIO so teardown aborts the update instead of waiting on the inode it is evicting. The Linux kernel CVE team has assigned CVE-2026-72189 to this issue. Affected and fixed versions =========================== Issue introduced in 7.1 with commit 495e90fa334828d4119061e2726af51d0a0fb4ed and fixed in 7.1.5 with commit d5379035355c0dcb1e92a2544d40f48441e1d637 Issue introduced in 7.1 with commit 495e90fa334828d4119061e2726af51d0a0fb4ed and fixed in 7.2-rc3 with commit 0ebe8f625ab0520217a425d7cd366e4670484941 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-2026-72189 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/attrlist.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/d5379035355c0dcb1e92a2544d40f48441e1d637 https://git.kernel.org/stable/c/0ebe8f625ab0520217a425d7cd366e4670484941