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

The following references provide additional information about CVE-2025-38587 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

6 patch commits total View all on NVD

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.

  • What is Infinite Loop (CWE-835)?

    The product contains an iteration that does not exit even when it should. View CWE-835 on MITRE CWE →

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