What is CVE-2025-38085?

CVE-2025-38085 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 2.6.20 onward and patched in 5.10.239, 5.15.186, 6.1.142 and others. CVE-2025-38085 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38085?

CVE-2025-38085 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-2025-38085?

Yes, CVE-2025-38085 has been patched. Fixed versions include 5.10.239, 5.15.186, 6.1.142 and others. If you are running Linux kernel 2.6.20 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38085 actively exploited?

CVE-2025-38085 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-2025-38085

Medium

In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race huge_pmd_unshare() drops a reference on a page table that may have previously been shared across processes, potentially turning it into a normal page table used in another process in which unrelated VMAs can afterwards be installed. If this happens in the middle of a concurrent gup_fast(), gup_fast() could end up walking the page tables of another process. While I don't see any way in which that immediately leads to kernel memory corruption, it is really weird and unexpected. Fix it with an explicit broadcast IPI through tlb_remove_table_sync_one(), just like we do in khugepaged when removing page tables for a THP collapse.

Package Linux Kernel

Published 2025-06-28

Last modified 2025-12-18

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-2025-38085 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 2.6.20 and later are affected. Fixed in 5.10.239, 5.15.186, 6.1.142, 6.6.95, 6.12.35, 6.15.4, 6.16 and their respective stable series.

Affected from

≥ 2.6.20

Fixed in

✓ 5.10.239 5.10.x ✓ 5.15.186 5.15.x ✓ 6.1.142 6.1.x ✓ 6.6.95 6.6.x ✓ 6.12.35 6.12.x ✓ 6.15.4 6.15.x ✓ 6.16

References

10 total

Kernel Git
https://git.kernel.org/stable/c/034a52b5ef57c9c8225d94e9067f3390bb33922f

Patch
Kernel Git
https://git.kernel.org/stable/c/1013af4f585fccc4d3e5c5824d174de2257f7d6d

Patch
Kernel Git
https://git.kernel.org/stable/c/952596b08c74e8fe9e2883d1dc8a8f54a37384ec

Patch
Kernel Git
https://git.kernel.org/stable/c/a3d864c901a300c295692d129159fc3001a56185

Patch
Kernel Git
https://git.kernel.org/stable/c/a6bfeb97941a9187833b526bc6cc4ff5706d0ce9

Patch

Showing 5 of 10 references View all on NVD

Details

CVE ID CVE-2025-38085

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2025-06-28

Modified 2025-12-18

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38085?

CVE-2025-38085 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 2.6.20 onward and has been patched in 5.10.239, 5.15.186, 6.1.142 and others. CVE-2025-38085 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38085?

CVE-2025-38085 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-2025-38085?

Yes. CVE-2025-38085 has been patched. Fixed versions include 5.10.239, 5.15.186, 6.1.142 and others. If you are running Linux kernel 2.6.20 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38085 actively exploited?

No. CVE-2025-38085 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.