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 2004D13A258 for ; Sun, 19 Jul 2026 15:46:37 +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=1784475998; cv=none; b=aveTM0iBVRz4aVH7ZSq+ieNNR8GdwEarhkzSJtQYQoEAVATf8mVz75r+IBcTVEW5VYCF6toVk4GAXN9DK1SbEINbmNttzQv3HkMSrMPvzEZy0Kx/Aydk4InPu+Ndo1C8cxkdE4BiVwtiC6x0/cWU7Pz9gr7aPCbDE/Z5y0TpyrY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784475998; c=relaxed/simple; bh=kMjsU6K7oidzaZUCIy2riwTUDsBmoZhVR5wJg3AWw9o=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=s35Vt1aaltTJQYxX11i/sd5LWzG4hWleYc+bOouwBfZJ2Lbuikj0kv0xBBVJde9yDlob5r5daZKflA8F6YlojAkVKE9yi8PZbh/q0GYU6f31b7gN3C+LU+KSrfO829An+o9lL/r/aSbuOd7pKasn8DzVirpJgQwgT7s4T2DELLs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ctwcxs89; 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="ctwcxs89" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6CAE51F000E9; Sun, 19 Jul 2026 15:46:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784475997; bh=5qkBoyQfeMMm26k6mhiuv9YmwWfaDhL3e9iA2K1B1Ss=; h=From:To:Cc:Subject:Date:Reply-To; b=ctwcxs89ZR07DSjCH6AbTF4SsMGVp1y+3vnQyyik5/tEkzASZkCsTq2LrKzhEWVFk DXpUaGP7MjDyVoB/9vLc814UtAZlCyFcpwur9TnZTAWMkSSNwL6v1we9DHySQMSlZN hgLKUOoC2FMfaK5F1egimc0YM8cwgfb4XtKvZnMY= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-64157: netfs: Fix partial invalidation of streaming-write folio Date: Sun, 19 Jul 2026 17:40:19 +0200 Message-ID: <2026071933-CVE-2026-64157-8f76@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=2786; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=4NqQo4yVcyW3Vmqav4iasmqJNZIxk49fI7Mmp4h45GM=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkx7yt1bWUX+RT8WcGTk31dLuT3trOel2bFdmsInKk/1 xgp5bGiI5aFQZCJQVZMkeXLNp6j+ysOKXoZ2p6GmcPKBDKEgYtTACbil8AwP7z8ws5DB7fqzoxQ ZJTX/XRwr8kUVoa5AtaNW52Nf0gGx56U0fyft/7qFvFvAA== 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: netfs: Fix partial invalidation of streaming-write folio In netfs_invalidate_folio(), if the region of a partial invalidation overlaps the front (but not all) of a dirty write cached in a streaming write page (dirty, but not uptodate, with the dirty region tracked by a netfs_folio struct), the function modifies the dirty region - but incorrectly as it moves the region forward by setting the start to the start, not the end, of the invalidation region. Fix this by setting finfo->dirty_offset to the end of the invalidation region (iend). The Linux kernel CVE team has assigned CVE-2026-64157 to this issue. Affected and fixed versions =========================== Issue introduced in 6.11 with commit cce6bfa6ca0e30af9927b0074c97fe6a92f28092 and fixed in 6.12.92 with commit f6b2569ae29b666fd15ff2848684c445ba442a39 Issue introduced in 6.11 with commit cce6bfa6ca0e30af9927b0074c97fe6a92f28092 and fixed in 6.18.34 with commit 3d9601c029b934b5b6a10f99791467b10eb6b211 Issue introduced in 6.11 with commit cce6bfa6ca0e30af9927b0074c97fe6a92f28092 and fixed in 7.0.11 with commit 6a3d27116be2c5fb9a03d5cf37c486ac517f3689 Issue introduced in 6.11 with commit cce6bfa6ca0e30af9927b0074c97fe6a92f28092 and fixed in 7.1 with commit 6d91acc7fb85d33ea58fca9b964a32a453937f4b Issue introduced in 6.10.8 with commit e2814004138a541110d4b2dc254a8f619c2c4ce0 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-2026-64157 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/netfs/misc.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/f6b2569ae29b666fd15ff2848684c445ba442a39 https://git.kernel.org/stable/c/3d9601c029b934b5b6a10f99791467b10eb6b211 https://git.kernel.org/stable/c/6a3d27116be2c5fb9a03d5cf37c486ac517f3689 https://git.kernel.org/stable/c/6d91acc7fb85d33ea58fca9b964a32a453937f4b