---
id: CVE-2026-98140
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ntfs: fix kmap_local leak in write_mft_record_nolock() error paths

  write_mft_record_nolock() maps the MFT record folio with
  kmap_local_folio(), but the pre_write_mst_f…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ntfs: fix kmap_local leak in write_mft_record_nolock() error paths

  write_mft_record_nolock() maps the MFT record folio with
  kmap_local_folio(), but the pre_write_mst_f…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 115380f9a2f9675c7924563cbba70d40cae8fb81 <
    5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480c
  - >-
    Linux >= 115380f9a2f9675c7924563cbba70d40cae8fb81 <
    cf06dcd572845723821b54a608fc2da995c3c8e2
  - Linux 7.1
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T11:17:45.497'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-98140'
references:
  - url: 'https://git.kernel.org/stable/c/5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cf06dcd572845723821b54a608fc2da995c3c8e2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-25T11:06:38.810Z'
---

## Overview

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

ntfs: fix kmap_local leak in write_mft_record_nolock() error paths

write_mft_record_nolock() maps the MFT record folio with
kmap_local_folio(), but the pre_write_mst_fixup() and
bio_add_folio() failure paths jump to the error label without
unmapping it. kmap_local mappings are stack-ordered per task, so
leaking one corrupts the nesting for any outer mapping.

Unmap the folio on those error paths too.

## Remediation

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