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 2BFD9455620 for ; Fri, 11 Sep 2026 20:06:46 +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=1789157209; cv=none; b=u6vvYOwl8uqaiGWTcUbSmaH8LPjEFjAY944rbxp31MBeIfcjfGQ5+JbWqtRFnoZFlL/3aYNjuIv/OkYr5JFwMeuK8BOmH4xIhrWnOTXHmC/khVpdW6+GbX1CtTCMGTMi8cPOFAyg9Trhl5P1ugcz8z++Q1EJp95FO3fMgMAN2/8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789157209; c=relaxed/simple; bh=3ESNztKE0PN6nSe+azkbsAWrV8XdsjQB1MPL/uZV96c=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=DyMyCyQ9WkgSEloGOZvbEhGJf587uXO6ts7+YvsjaGqFsoxEHcOjPPh9tBeAfkAwYxyYDK6QMdbUlAO+t1F8kz/Jz63zcrAFfGNoCRomkQd/j/ySNBINGS8B6EIfirLQw/I2YBfpdfoHCw81k4+9pNWMYJAjdgLatOTre0wYPuY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=FYrMIoKO; 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="FYrMIoKO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B6251F00898; Fri, 11 Sep 2026 20:06:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789157205; bh=5MV8KBgeCnAudAcndq+fQA0ODsnPzdm2RHPokk/nNn0=; h=From:To:Cc:Subject:Date:Reply-To; b=FYrMIoKOa9qi6wGHQ5BPalHIxdG6Ua6yTMmFSFrvGStMlYDPtRp39oXXCMZPCzN+I nYZi90Y8JWTQ9GRxgZ3Bd6NBvP/tNPZF/HrHXdM7s51S8y9+I+CzOJfrUEOBEcY3PC hsRKxfLqqfnDMHAJFoT3ZIaWKoyo1txud9ca4Dnc= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-89770: iomap: don't free integrity payload that doesn't exist Date: Fri, 11 Sep 2026 21:47:39 +0200 Message-ID: <2026091111-CVE-2026-89770-e213@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=2170; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=jY+rLd7VkO2zMfTaQQvy3QvSUHmAEPz1QTjlQ5zCG4M=; b=owGbwMvMwCRo6H6F97bub03G02pJDFlLIieve7L7Z9TeoxE5U7MyG1/McypbvWOJavm9AweZV f5u/vntVEcsC4MgE4OsmCLLl208R/dXHFL0MrQ9DTOHlQlkCAMXpwBM5IgOw3ynSS0P5s2yn6Ox 02Qj76ftehLrZ1cxzPc/fs5q3f3mHpbV+wX6Esrnn485YgIA 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: iomap: don't free integrity payload that doesn't exist fs_bio_integrity_alloc might not allocate a bio integrity payload if PI verification is disabled on the block device. Check for that case before calling fs_bio_integrity_free in iomap_bio_read_folio_range_sync to avoid a NULL pointer dereferences. Make the branch cover the PI verification as well - while fs_bio_integrity_verify works without an integrity payload, it requires one to actually do useful work. The Linux kernel CVE team has assigned CVE-2026-89770 to this issue. Affected and fixed versions =========================== Issue introduced in 7.1 with commit 0b10a370529cbd7b918c1eef43d409e43d9e0b78 and fixed in 7.2.4 with commit 65651f1001aa3638909bc58c7b2b46160692757b Issue introduced in 7.1 with commit 0b10a370529cbd7b918c1eef43d409e43d9e0b78 and fixed in 7.3-rc1 with commit 8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d 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-2026-89770 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/iomap/bio.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/65651f1001aa3638909bc58c7b2b46160692757b https://git.kernel.org/stable/c/8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d