---
id: CVE-2025-38206
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  exfat: fix double free in delayed_free

  The double free could happen in the following path.

  exfat_create_upcase_table()
          exfat_create_upcase_table() : return er…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  exfat: fix double free in delayed_free

  The double free could happen in the following path.

  exfat_create_upcase_table()
          exfat_create_upcase_table() : return er…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-415
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.7, < 5.10.239'
  - 'linux_kernel >= 5.11, < 5.15.186'
  - 'linux_kernel >= 5.16, < 6.15.4'
  - debian_linux = 11.0
patched:
  - linux_kernel 6.15.4
published: '2025-07-04'
updated: '2026-09-02'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-38206'
references:
  - url: 'https://git.kernel.org/stable/c/13d8de1b6568dcc31a95534ced16bc0c9a67bc15'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/1f3d9724e16d62c7d42c67d6613b8512f2887c22'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/29abaf93357f4a7d083cf399d4306999e20db31d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/66e84439ec2af776ce749e8540f8fdd257774152'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ac65f76db9b2ff3fbc9e198c0e9aaf81b111b7d0'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/d3cef0e7a5c1aa6217c51faa9ce8ecac35d6e1fd'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ea27703eb0efbadcd45b9949526160ed90536a72'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00177
epssPercentile: 0.06439
ingestedAt: '2026-09-02T13:44:40.965Z'
---

## Overview

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

exfat: fix double free in delayed_free

The double free could happen in the following path.

exfat_create_upcase_table()
        exfat_create_upcase_table() : return error
        exfat_free_upcase_table() : free ->vol_utbl
        exfat_load_default_upcase_table : return error
     exfat_kill_sb()
           delayed_free()
                  exfat_free_upcase_table() <--------- double free
This patch set ->vol_util as NULL after freeing it.

## Affected

- `linux_kernel >= 5.7, < 5.10.239`
- `linux_kernel >= 5.11, < 5.15.186`
- `linux_kernel >= 5.16, < 6.15.4`
- `debian_linux = 11.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.15.4`