---
id: CVE-2026-97488
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  qnx4: handle set_blocksize failures

  qnx4 uses buffer_heads, which don't handle block size > PAGE_SIZE well.
  Without this, mounting will hit the

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

  qnx4: handle set_blocksize failures

  qnx4 uses buffer_heads, which don't handle block size > PAGE_SIZE well.
  Without this, mounting will hit the

          BUG_ON(offset …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    aac97a4b3f47c36a47f934aa679407b718b67537
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    60f7ccf669882262330171eda51a4f52fa2e69c9
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    c7d911ea1cc9a63b07e52f5e75b263be0615b289
  - Linux < 6.12.111
  - Linux < 6.18.53
  - Linux (all versions)
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T17:17:26.370'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97488'
references:
  - url: 'https://git.kernel.org/stable/c/60f7ccf669882262330171eda51a4f52fa2e69c9'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/aac97a4b3f47c36a47f934aa679407b718b67537'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c7d911ea1cc9a63b07e52f5e75b263be0615b289'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T16:47:15.868Z'
---

## Overview

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

qnx4: handle set_blocksize failures

qnx4 uses buffer_heads, which don't handle block size > PAGE_SIZE well.
Without this, mounting 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.