---
id: CVE-2026-97486
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  hpfs: handle set_blocksize failures

  hpfs 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:

  hpfs: handle set_blocksize failures

  hpfs 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 <
    fc79fcc78cb771f2a803e52149cac5ca9050fd05
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    f27e21cf3c0446a3536ea9b588a78a46b0a2cb66
  - >-
    Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <
    a405996f23e04942aad064ab8d50c55827482872
  - Linux < 6.12.111
  - Linux < 6.18.53
  - Linux (all versions)
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T17:17:26.160'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97486'
references:
  - url: 'https://git.kernel.org/stable/c/a405996f23e04942aad064ab8d50c55827482872'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/f27e21cf3c0446a3536ea9b588a78a46b0a2cb66'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fc79fcc78cb771f2a803e52149cac5ca9050fd05'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T16:47:15.870Z'
---

## Overview

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

hpfs: handle set_blocksize failures

hpfs 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.