What is CVE-2025-38587?

CVE-2025-38587 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Infinite Loop flaw (CWE-835), affecting Linux kernel versions from 6.1.128 onward and patched in 6.1.148, 6.6.102, 6.12.42 and others. CVE-2025-38587 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2025-38587?

CVE-2025-38587 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-2025-38587?

Yes, CVE-2025-38587 has been patched. Fixed versions include 6.1.148, 6.6.102, 6.12.42 and others. If you are running Linux kernel 6.1.128 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2025-38587 actively exploited?

CVE-2025-38587 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Infinite Loop (CWE-835)?

The product contains an iteration that does not exit even when it should. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/835.html

CVE-2025-38587

Medium

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in fib6_info_uses_dev() fib6_info_uses_dev() seems to rely on RCU without an explicit protection. Like the prior fix in rt6_nlmsg_size(), we need to make sure fib6_del_route() or fib6_add_rt2node() have not removed the anchor from the list, or we risk an infinite loop.

Package Linux Kernel

Published 2025-08-19

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

Weakness type

CWE-835

CVE-2025-38587 is a Infinite Loop vulnerability

What is Infinite Loop?

The product contains an iteration that does not exit even when it should. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.1.128, 6.6.75, 6.12.2, 6.11.11, 6.13 and later are affected. Fixed in 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1, 6.17 and their respective stable series.

Affected from

≥ 6.1.128 ≥ 6.6.75 ≥ 6.12.2 ≥ 6.11.11 ≥ 6.13

Fixed in

✓ 6.1.148 6.1.x ✓ 6.6.102 6.6.x ✓ 6.12.42 6.12.x ✓ 6.15.10 6.15.x ✓ 6.16.1 6.16.x ✓ 6.17

References

7 total

Kernel Git
https://git.kernel.org/stable/c/16d21816c0918f8058b5fc14cbe8595d62046e2d

Patch
Kernel Git
https://git.kernel.org/stable/c/9cb6de8ee144a94ae7a40bdb32560329ab7276f0

Patch
Kernel Git
https://git.kernel.org/stable/c/bc85e62394f008fa848c4ba02c936c735a3e8ef5

Patch
Kernel Git
https://git.kernel.org/stable/c/db65739d406c72776fbdbbc334be827ef05880d2

Patch
Kernel Git
https://git.kernel.org/stable/c/e09be457b71b983a085312ff9e981f51e4ed3211

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2025-38587

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-08-19

Modified 2026-01-07

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2025-38587?

CVE-2025-38587 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Infinite Loop flaw (CWE-835) . It affects Linux kernel versions from 6.1.128 onward and has been patched in 6.1.148, 6.6.102, 6.12.42 and others. CVE-2025-38587 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2025-38587?

CVE-2025-38587 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-2025-38587?

Yes. CVE-2025-38587 has been patched. Fixed versions include 6.1.148, 6.6.102, 6.12.42 and others. If you are running Linux kernel 6.1.128 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2025-38587 actively exploited?

No. CVE-2025-38587 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.