---
id: CVE-2026-97485
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  omfs: handle set_blocksize failures

  omfs uses buffer_heads, which don't handle block size > PAGE_SIZE well.
  Without this, mounting we will hit the

          BUG_ON(offs…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  omfs: handle set_blocksize failures

  omfs uses buffer_heads, which don't handle block size > PAGE_SIZE well.
  Without this, mounting we will hit the

          BUG_ON(offs…
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'
cwe:
  - CWE-617
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 555e3775ced1d05203934fc6529bbf0560dd8733 <
    a2a3592ebf3920dd6f2b754d2bb7361f54764e84
  - >-
    Linux >= 555e3775ced1d05203934fc6529bbf0560dd8733 <
    d81e1e9bd1df5948c699cb5aec984acdef5b2681
  - >-
    Linux >= 555e3775ced1d05203934fc6529bbf0560dd8733 <
    120e0db84a69f18e51ba9ae2d036df3a052a33e1
  - >-
    Linux >= 555e3775ced1d05203934fc6529bbf0560dd8733 <
    29186cd17bb5f501a6ae831dac4fabf637879982
  - >-
    Linux >= 555e3775ced1d05203934fc6529bbf0560dd8733 <
    61ffc31cd8642d7a950b6831720629c8331365f6
  - >-
    Linux >= 555e3775ced1d05203934fc6529bbf0560dd8733 <
    fd4d6593c51253c79be422d6ae42e318250e20a7
  - >-
    Linux >= 555e3775ced1d05203934fc6529bbf0560dd8733 <
    18c3d6fcb557f920c9143711497625e70153874c
  - Linux 2.6.27
published: '2026-09-24'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T11:17:58.457'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97485'
references:
  - url: 'https://git.kernel.org/stable/c/120e0db84a69f18e51ba9ae2d036df3a052a33e1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/18c3d6fcb557f920c9143711497625e70153874c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/29186cd17bb5f501a6ae831dac4fabf637879982'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/61ffc31cd8642d7a950b6831720629c8331365f6'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a2a3592ebf3920dd6f2b754d2bb7361f54764e84'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d81e1e9bd1df5948c699cb5aec984acdef5b2681'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fd4d6593c51253c79be422d6ae42e318250e20a7'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97485.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-97485'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2540449'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-97485'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97485'
  - url: >-
      https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97485.mbox
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00173
epssPercentile: 0.06629
cvssSource: vendor
ingestedAt: '2026-09-24T16:47:15.869Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

omfs: handle set_blocksize failures

omfs uses buffer_heads, which don't handle block size > PAGE_SIZE well.
Without this, mounting we will hit the

        BUG_ON(offset >= folio_size(folio));

in folio_set_bh on the first __bread_gfp call.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Moderate · updated 2026-09-30 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97485.json)