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Vulnerabilities

Vulnerability · CVE-2025-37789

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix nested key length validation in the set() action It's not safe to access nla_len(ovs_key)

Published May 1, 2025 · catalog updated Aug 5, 2026 · Linux Linux

Check if you run it

No confirmed exploitation is on record for CVE-2025-37789. EPSS is 0.22%. Act only if a listed version of Linux Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.22%
Remediation
Version ranges on file
Affected products
vendor Linux Linux ccb1352e76cff0524e7ccb2074826a092dd13016 <1489c195c8eecd262aa6712761ba5288203e28ec

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix nested key length validation in the set() action It's not safe to access nla_len(ovs_key) if the data is smaller than the netlink header. Check that the attribute is OK first.

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 ccb1352e76cff0524e7ccb2074826a092dd13016 <1489c195c8eecd262aa6712761ba5288203e28ecccb1352e76cff0524e7ccb2074826a092dd13016 <1489c195c8eecd262aa6712761ba5288203e28ec

How to fix CVE-2025-37789

What to do

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

Should you patch?

No confirmed exploitation is on record for CVE-2025-37789. EPSS is 0.22%. Act only if a listed version of Linux Linux is installed.

Which versions are affected?

Compare what you have installed with Linux Linux ccb1352e76cff0524e7ccb2074826a092dd13016 <1489c195c8eecd262aa6712761ba5288203e28ec ccb1352e76cff0524e7ccb2074826a092dd13016 <1489c195c8eecd262aa6712761ba5288203e28ec. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.22%. 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. May 1, 2025 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix nested key length validation in the set() action It's not safe to access nla_len(ovs_key) if the data is smaller than the netlink header. Check that the attribute is OK first.

  2. Aug 5, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix nested key length validation in the set() action It's not safe to access nla_len(ovs_key) if the data is smaller than the netlink header. Check that the attribute is OK first.

Sources

  • CVE.orgVulnerability recordCVE-2025-37789

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-37789

    30-day exploitation probability 0.2%

    first.org
  • EUVDVulnerability recordEUVD-2025-13015

    In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix nested key length validation in the set() action It's not safe to access nla_len(ovs_key) if the data is smaller than the netlink header. Check that the attribute is OK first.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.