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 257E65867EA for ; Fri, 11 Sep 2026 19:57:01 +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=1789156645; cv=none; b=elcLeda2U507snQI0Bq8+MvElDIaDEy0JJLG/iepv4jLZZbzQ007m35GwOnh9mdSKWcMpbyH5rdED6NQaJlN/Q01UQB+q7NzmuOf66OhoML2JeGqDUy8+dp6s8+LtzjwF6KzEoWnyNayldzN5b31p6fL/h2P6wQMMno4iJJTPBE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789156645; c=relaxed/simple; bh=H5d1Pl7mS1DIXAPMXFAgCRTG0JRdMPOVSz/mU15a6nM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=OywmiF3NYg5KqhBZnpbyd8KlPzI5CxSEuTX7tdqUTo11GWJ7eI/F1TP+C+K/SHCgXPQuMst8gCmA6wmEwIZoaixTvpLBqNVfbKq+YD1mYhhvcE73ZeFMuQ/2c5DNpEe/PoQ9vGAMll+so5fx6U9NLfgicPMdJ/nmyRHLFU7efwE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=2UsOCWuT; 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="2UsOCWuT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 669761F000FF; Fri, 11 Sep 2026 19:56:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789156619; bh=sg4x6SP+yeqRnXiSm8IrERHWX5ZvMp3zyzL45V3D8gY=; h=From:To:Cc:Subject:Date:Reply-To; b=2UsOCWuTb8C5Vrtf9vKC3Rqz6QOU+yABwrKGZ+ejqBziprt0or7bqUqCudS5IpLna MNlIIOg7suHZ9Q4gn192DC7iII8MbJyZm37M3sfxY7VMCDe7uD9wRPWhwxKpYOGvPw bV9Nbs9lSFo7EKyQXmFBx1+PJSsCVfUkTmVUh8PA= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-89577: dm-io: report non-retryable errors separatedly Date: Fri, 11 Sep 2026 21:44:26 +0200 Message-ID: <2026091127-CVE-2026-89577-4cf7@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=2752; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=sp8a5kWdeOvWexQ6fM2Dd414LLiISvtbCWFqNIwDySM=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlLItOndjFrrN38XXXVrWOXdzGVKKo4fToY0Nl5a0mzu vij9z0BHbEsDIJMDLJiiixftvEc3V9xSNHL0PY0zBxWJpAhDFycAjCRxgsM85TTNrM94U6/k5a2 LLDd5Orb4L6jagwL+o+u83ogx8F+QPjExrrX0/ICs0LOAAA= 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: dm-io: report non-retryable errors separatedly The error codes BLK_STS_NOTSUPP and BLK_STS_INVAL should not cause leg failure on dm-raid1. This patch changes the interface to dm-io, so that it reports two error bitmaps - error_bits and unsup_bits. The unsup_bit bitmap tracks BLK_STS_NOTSUPP or BLK_STS_INVAL errors, the error_bits bitmap tracks all the other errors. dm-raid1 is changed so that it won't fail a leg if it receives an error in the unsup_bits bitmap. This patch (with 62dc37a819a5) fixes misbehavior if the user uses unaligned bio vectors on dm-raid1. The Linux kernel CVE team has assigned CVE-2026-89577 to this issue. Affected and fixed versions =========================== Issue introduced in 6.18 with commit 5ff3f74e145adc79b49668adb8de276446acf6be and fixed in 6.18.50 with commit 49694a363f7ecd5a52d1ea1a13c287ad6d196c35 Issue introduced in 6.18 with commit 5ff3f74e145adc79b49668adb8de276446acf6be and fixed in 7.2.4 with commit 15fc1ec72e1f8089063d298550ada727e18f114a Issue introduced in 6.18 with commit 5ff3f74e145adc79b49668adb8de276446acf6be and fixed in 7.3-rc1 with commit 47a5e62f39875f371bded6e34ffb9cf15ccd813d 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-2026-89577 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/md/dm-bufio.c drivers/md/dm-integrity.c drivers/md/dm-io.c drivers/md/dm-kcopyd.c drivers/md/dm-log.c drivers/md/dm-raid1.c drivers/md/dm-snap-persistent.c drivers/md/dm-verity-target.c drivers/md/dm-writecache.c include/linux/dm-io.h 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/49694a363f7ecd5a52d1ea1a13c287ad6d196c35 https://git.kernel.org/stable/c/15fc1ec72e1f8089063d298550ada727e18f114a https://git.kernel.org/stable/c/47a5e62f39875f371bded6e34ffb9cf15ccd813d