What is CVE-2025-38306?

CVE-2025-38306 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10, classified as a Race Condition flaw (CWE-362), affecting Linux kernel versions from 6.11 onward and patched in 6.12.46, 6.15.3 and 6.16. CVE-2025-38306 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38306?

CVE-2025-38306 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2025-38306?

Yes, CVE-2025-38306 has been patched. Fixed versions include 6.12.46, 6.15.3 and 6.16. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38306 actively exploited?

CVE-2025-38306 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/362.html

CVE-2025-38306

Medium

In the Linux kernel, the following vulnerability has been resolved: fs/fhandle.c: fix a race in call of has_locked_children() may_decode_fh() is calling has_locked_children() while holding no locks. That's an oopsable race... The rest of the callers are safe since they are holding namespace_sem and are guaranteed a positive refcount on the mount in question. Rename the current has_locked_children() to __has_locked_children(), make it static and switch the fs/namespace.c users to it. Make has_locked_children() a wrapper for __has_locked_children(), calling the latter under read_seqlock_excl(&mount_lock).

Package Linux Kernel

Published 2025-07-10

Last modified 2025-11-18

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-362

CVE-2025-38306 is a Race Condition vulnerability

What is Race Condition?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.11 and later are affected. Fixed in 6.12.46, 6.15.3, 6.16 and their respective stable series.

Affected from

≥ 6.11

Fixed in

✓ 6.12.46 6.12.x ✓ 6.15.3 6.15.x ✓ 6.16

References

3 total

Kernel Git
https://git.kernel.org/stable/c/1f282cdc1d219c4a557f7009e81bc792820d9d9a

Patch
Kernel Git
https://git.kernel.org/stable/c/287c7d34eedd37af1272dfb3b6e8656f4f026424

Patch
Kernel Git
https://git.kernel.org/stable/c/6482c3dccbfb8d20e2856ce67c75856859930b3f

Patch

Details

CVE ID CVE-2025-38306

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2025-07-10

Modified 2025-11-18

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38306?

CVE-2025-38306 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as a Race Condition flaw (CWE-362) . It affects Linux kernel versions from 6.11 onward and has been patched in 6.12.46, 6.15.3 and 6.16. CVE-2025-38306 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38306?

CVE-2025-38306 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2025-38306?

Yes. CVE-2025-38306 has been patched. Fixed versions include 6.12.46, 6.15.3 and 6.16. If you are running Linux kernel 6.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38306 actively exploited?

No. CVE-2025-38306 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.