What is CVE-2025-38663?

CVE-2025-38663 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 2.6.30 onward and patched in 5.4.297, 5.10.241, 5.15.190 and others. CVE-2025-38663 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38663?

CVE-2025-38663 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2025-38663?

Yes, CVE-2025-38663 has been patched. Fixed versions include 5.4.297, 5.10.241, 5.15.190 and others. If you are running Linux kernel 2.6.30 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38663 actively exploited?

CVE-2025-38663 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2025-38663

Medium

In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject invalid file types when reading inodes To prevent inodes with invalid file types from tripping through the vfs and causing malfunctions or assertion failures, add a missing sanity check when reading an inode from a block device. If the file type is not valid, treat it as a filesystem error.

Package Linux Kernel

Published 2025-08-22

Last modified 2026-01-07

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 2.6.30 and later are affected. Fixed in 5.4.297, 5.10.241, 5.15.190, 6.1.148, 6.6.101, 6.12.41, 6.15.9, 6.16 and their respective stable series.

Affected from

≥ 2.6.30

Fixed in

✓ 5.4.297 5.4.x ✓ 5.10.241 5.10.x ✓ 5.15.190 5.15.x ✓ 6.1.148 6.1.x ✓ 6.6.101 6.6.x ✓ 6.12.41 6.12.x ✓ 6.15.9 6.15.x ✓ 6.16

References

The following references provide additional information about CVE-2025-38663 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

Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

Third Party Advisory
Kernel patch commit
https://git.kernel.org/stable/c/1a5c204e175a78556b8ef1f7683249fa5197295a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2cf0c4130bf340be3935d097a3dcbfefdcf65815
Patch
Kernel patch commit
https://git.kernel.org/stable/c/42cd46b3a8b1497b9258dc7ac445dbd6beb73e2f
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2025-38663

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-08-22

Modified 2026-01-07

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38663?

CVE-2025-38663 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 2.6.30 onward and has been patched in 5.4.297, 5.10.241, 5.15.190 and others. CVE-2025-38663 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38663?

CVE-2025-38663 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2025-38663?

Yes — CVE-2025-38663 has been patched. Fixed versions include 5.4.297, 5.10.241, 5.15.190 and others. If you are running Linux kernel 2.6.30 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38663 actively exploited?

No — CVE-2025-38663 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.