---
id: CVE-2026-97487
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  jfs: handle set_blocksize failures

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

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

  jfs: handle set_blocksize failures

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

          BUG_ON(offset…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    a0ac22af8acca6ea6c57aff72662086cb3243b1c
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    153374ee67a458c77b5755d3cc57fbdc639d327e
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    05107f5602751fcfd3d108c1f579eb45aabead52
  - Linux < 6.12.111
  - Linux < 6.18.53
  - Linux (all versions)
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T17:17:26.263'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97487'
references:
  - url: 'https://git.kernel.org/stable/c/05107f5602751fcfd3d108c1f579eb45aabead52'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/153374ee67a458c77b5755d3cc57fbdc639d327e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a0ac22af8acca6ea6c57aff72662086cb3243b1c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T16:47:15.869Z'
epss: 0.00166
epssPercentile: 0.05195
---

## Overview

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

jfs: handle set_blocksize failures

jfs 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.