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🛡️ CVE-2025-38206 — debian-linux

🟠 CVSS 7.8 — High ✅ No Known Exploit CWE-415 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

exfat: fix double free in delayed_free

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2025-38206 is classified as CWE-415: Double Free. The same allocation is released twice, corrupting allocator bookkeeping.

Affected software

CVE-2025-38206 is recorded against 3 packages.

  • debian-linux
  • kernel (from 5.16.0 up to 6.15.4)
  • linux-kernel (from 5.16 up to 6.15.4)

Timeline and source

Published on 4 July 2025 and last revised on 30 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
lists.debian.org

CVE-2025-38206 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-415
Public Exploit ✅ No
Source NVD
Published 2025-07-04
Updated 2026-08-20
Modified 2026-07-30

Affected Packages

Software From version Fixed in
debian-linux — —
kernel 5.16.0 6.15.4
linux-kernel 5.16 6.15.4

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.