---
id: CVE-2025-68239
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  binfmt_misc: restore write access before closing files opened by open_exec()

  bm_register_write() opens an executable file using open_exec(), which
  internally calls do_…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  binfmt_misc: restore write access before closing files opened by open_exec()

  bm_register_write() opens an executable file using open_exec(), which
  internally calls do_…
severity: none
published: '2025-12-16'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T02:18:10.687'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-68239'
references:
  - url: 'https://git.kernel.org/stable/c/480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/54274ff90488b6c0f595a6518faed3cf0bc966eb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/6cce7bc7fac8471c832696720d9c8f2a976d9c54'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/90f601b497d76f40fa66795c3ecf625b6aced9fd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/e785f552ab04dbca01d31f0334f4561240b04459'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/fbab8c08e1a6dbaef81e22d672a7647553101d16'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-784472.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00197
epssPercentile: 0.093
ingestedAt: '2026-10-14T13:30:58.463Z'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e7850f4d844e0acfac7e570af611d89deade3146 <
    54274ff90488b6c0f595a6518faed3cf0bc966eb
  - >-
    Linux >= e7850f4d844e0acfac7e570af611d89deade3146 <
    480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7f
  - >-
    Linux >= e7850f4d844e0acfac7e570af611d89deade3146 <
    fbab8c08e1a6dbaef81e22d672a7647553101d16
  - >-
    Linux >= e7850f4d844e0acfac7e570af611d89deade3146 <
    6cce7bc7fac8471c832696720d9c8f2a976d9c54
  - >-
    Linux >= e7850f4d844e0acfac7e570af611d89deade3146 <
    e785f552ab04dbca01d31f0334f4561240b04459
  - >-
    Linux >= e7850f4d844e0acfac7e570af611d89deade3146 <
    90f601b497d76f40fa66795c3ecf625b6aced9fd
  - Linux 467a50d5db7deaf656e18a1f633be9ecd94b393a
  - Linux 4a8b4124ea4156ca52918b66c750a69c6d932aa5
  - Linux 3fe116e33a855bbfdd32dc207e9be2a41e3ed3a6
  - Linux c0e0ab60d0b15469e69db93215dad009999f5a5b
  - Linux 5ab9464a2a3c538eedbb438f1802f2fd98d0953f
  - Linux d28492be82e19fc69cc69975fc2052b37ef0c821
  - Linux >= 4.9.262 < 4.10
  - Linux >= 4.14.226 < 4.15
  - Linux >= 4.19.181 < 4.20
  - Linux >= 5.4.106 < 5.5
  - Linux >= 5.10.24 < 5.11
  - Linux >= 5.11.7 < 5.12
  - Linux 5.12
---

## Overview

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

binfmt_misc: restore write access before closing files opened by open_exec()

bm_register_write() opens an executable file using open_exec(), which
internally calls do_open_execat() and denies write access on the file to
avoid modification while it is being executed.

However, when an error occurs, bm_register_write() closes the file using
filp_close() directly. This does not restore the write permission, which
may cause subsequent write operations on the same file to fail.

Fix this by calling exe_file_allow_write_access() before filp_close() to
restore the write permission properly.

## Remediation

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