---
id: CVE-2026-89770
title: 'iomap: don''t free integrity payload that doesn''t exist'
summary: |-
  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 de…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-476
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 0b10a370529cbd7b918c1eef43d409e43d9e0b78 <
    65651f1001aa3638909bc58c7b2b46160692757b
  - >-
    Linux >= 0b10a370529cbd7b918c1eef43d409e43d9e0b78 <
    8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d
  - Linux 7.1
published: '2026-09-11'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T08:52:23.735Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-89770'
references:
  - url: 'https://git.kernel.org/stable/c/65651f1001aa3638909bc58c7b2b46160692757b'
  - url: 'https://git.kernel.org/stable/c/8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89770.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-89770'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2532471'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-89770'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89770'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89770.mbox
tags:
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00198
epssPercentile: 0.09442
ingestedAt: '2026-09-14T11:11:19.884Z'
---

## Overview

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.

## Affected

- `Linux >= 0b10a370529cbd7b918c1eef43d409e43d9e0b78 < 65651f1001aa3638909bc58c7b2b46160692757b`
- `Linux >= 0b10a370529cbd7b918c1eef43d409e43d9e0b78 < 8a8685b32c0718cc7b2cb4d6202e5a5b8e0a8e2d`
- `Linux 7.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat OpenShift Container Platform 4 · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89770.json)