What is CVE-2025-38206?

CVE-2025-38206 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 5.7 onward and patched in 5.10.239, 5.15.186, 6.15.4 and others. CVE-2025-38206 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38206?

CVE-2025-38206 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2025-38206?

Yes, CVE-2025-38206 has been patched. Fixed versions include 5.10.239, 5.15.186, 6.15.4 and others. If you are running Linux kernel 5.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38206 actively exploited?

CVE-2025-38206 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-38206

High

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.

Package Linux Kernel

Published 2025-07-04

Last modified 2025-12-18

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-415

CVE-2025-38206 is classified as CWE-415

See CWE-415 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 5.7 and later are affected. Fixed in 5.10.239, 5.15.186, 6.15.4, 6.16 and their respective stable series.

Affected from

≥ 5.7

Fixed in

✓ 5.10.239 5.10.x ✓ 5.15.186 5.15.x ✓ 6.15.4 6.15.x ✓ 6.16

References

The following references provide additional information about CVE-2025-38206 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

Mailing List Third Party Advisory
Kernel patch commit
https://git.kernel.org/stable/c/13d8de1b6568dcc31a95534ced16bc0c9a67bc15
Patch
Kernel patch commit
https://git.kernel.org/stable/c/1f3d9724e16d62c7d42c67d6613b8512f2887c22
Patch
Kernel patch commit
https://git.kernel.org/stable/c/66e84439ec2af776ce749e8540f8fdd257774152
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2025-38206

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-07-04

Modified 2025-12-18

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38206?

CVE-2025-38206 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 5.7 onward and has been patched in 5.10.239, 5.15.186, 6.15.4 and others. CVE-2025-38206 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38206?

CVE-2025-38206 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2025-38206?

Yes — CVE-2025-38206 has been patched. Fixed versions include 5.10.239, 5.15.186, 6.15.4 and others. If you are running Linux kernel 5.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38206 actively exploited?

No — CVE-2025-38206 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.