ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-38651

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix warning from KUnit tests get_id_range() expects a positive value as first argument but get_random_

Published Aug 22, 2025 · catalog updated May 11, 2026 · Linux Linux

Check this week

CVE-2025-38651 is not in CISA KEV. FIRST estimates a 16.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
None0.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
16.00%
Remediation
Version ranges on file
Affected products
vendor Linux Linux d9d2a68ed44bbae598a81cb95e0746fa6b13b57f <127183361b69dbb7ac3246ad4726f93400481249

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix warning from KUnit tests get_id_range() expects a positive value as first argument but get_random_u8() can return 0. Fix this by clamping it. Validated by running the test in a for loop for 1000 times. Note that MAX() is wrong as it is only supposed to be used for constants, but max() is good here. [..] ok 9 test_range2_rand1 [..] ok 10 test_range2_rand2 [..] ok 11 test_range2_rand15 [..] ------------[ cut here ]------------ [..] WARNING: CPU: 6 PID: 104 at security/landlock/id.c:99 test_range2_rand16 (security/l

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux d9d2a68ed44bbae598a81cb95e0746fa6b13b57f <127183361b69dbb7ac3246ad4726f93400481249d9d2a68ed44bbae598a81cb95e0746fa6b13b57f <127183361b69dbb7ac3246ad4726f93400481249

How to fix CVE-2025-38651

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-38651 is not in CISA KEV. FIRST estimates a 16.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Which versions are affected?

Compare what you have installed with Linux Linux d9d2a68ed44bbae598a81cb95e0746fa6b13b57f <127183361b69dbb7ac3246ad4726f93400481249 d9d2a68ed44bbae598a81cb95e0746fa6b13b57f <127183361b69dbb7ac3246ad4726f93400481249. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 16.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 22, 2025 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: landlock: Fix warning from KUnit tests get_id_range() expects a positive value as first argument but get_random_u8() can return 0. Fix this by clamping it. Validated by running the test in a for loop for 1000 times. Note that MAX() is wrong as it is only supposed to be used for constants, but max() is good here. [..] ok 9 test_ran

  2. May 11, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: landlock: Fix warning from KUnit tests get_id_range() expects a positive value as first argument but get_random_u8() can return 0. Fix this by clamping it. Validated by running the test in a for loop for 1000 times. Note that MAX() is wrong as it is only supposed to be used for constants, but max() is good here. [..] ok 9 test_ran

Sources

  • CVE.orgVulnerability recordCVE-2025-38651

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-25551

    In the Linux kernel, the following vulnerability has been resolved: landlock: Fix warning from KUnit tests get_id_range() expects a positive value as first argument but get_random_u8() can return 0. Fix this by clamping it. Validated by running the test in a for loop for 1000 tim

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog May 11, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.