CVE-2025-22075

Local link-query denial via undersized VF messages

Published Apr 16, 2025 · Updated May 11, 2026

Denial of service in the Linux kernel's rtnetlink component allows local users to interrupt link-information queries via netlink. rtnl_getlink allocates an ifinfo message without reserving space for supported VF port and node GUID attributes, so numerous GUIDs exceed the size calculation. Triggering the warning requires local low-privileged access and a device configured with many SR-IOV virtual functions; the observed consequence is link-query failure rather than a system crash.

CVSS severity2.0
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel's rtnetlink component allows local users to interrupt link-information queries via netlink. rtnl_getlink allocates an ifinfo message without reserving space for supported VF port and node GUID attributes, so numerous GUIDs exceed the size calculation. Triggering the warning requires local low-privileged access and a device configured with many SR-IOV virtual functions; the observed consequence is link-query failure rather than a system crash.

The record

CVE
CVE-2025-22075
Published
Apr 16, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 16, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=30aad41721e087babcf27c5192474724d555936c <0f5489707cf528f9df2f39a3045c1ee713ec90e7
  2. Affected versionversion=30aad41721e087babcf27c5192474724d555936c <15f150771e0ec97f8ab1657e7d2568e593c7fa04
  3. Affected versionversion=30aad41721e087babcf27c5192474724d555936c <23f00807619d15063d676218f36c5dfeda1eb420
  4. Affected versionversion=30aad41721e087babcf27c5192474724d555936c <28b21ee8e8fb326ba961a4bbce04ec04c65e705a
  5. Affected versionversion=30aad41721e087babcf27c5192474724d555936c <365c1ae819455561d4746aafabad673e4bcb0163
  6. Affected versionversion=30aad41721e087babcf27c5192474724d555936c <5f39454468329bb7fc7fc4895a6ba6ae3b95027e
  7. Affected versionversion=30aad41721e087babcf27c5192474724d555936c <5fed5f6de3cf734b231a11775748a6871ee3020f
  8. Affected versionversion=30aad41721e087babcf27c5192474724d555936c <bb7bdf636cef74cdd7a7d548bdc7457ae161f617
  9. Affected versionversion=5.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=30aad41721e087babcf27c5192474724d555936c <0f5489707cf528f9df2f39a3045c1ee713ec90e7; version=30aad41721e087babcf27c5192474724d555936c <15f150771e0ec97f8ab1657e7d2568e593c7fa04; version=30aad41721e087babcf27c5192474724d555936c <23f00807619d15063d676218f36c5dfeda1eb420; version=30aad41721e087babcf27c5192474724d555936c <28b21ee8e8fb326ba961a4bbce04ec04c65e705a; version=30aad41721e087babcf27c5192474724d555936c <365c1ae819455561d4746aafabad673e4bcb0163; version=30aad41721e087babcf27c5192474724d555936c <5f39454468329bb7fc7fc4895a6ba6ae3b95027e; version=30aad41721e087babcf27c5192474724d555936c <5fed5f6de3cf734b231a11775748a6871ee3020f; version=30aad41721e087babcf27c5192474724d555936c <bb7bdf636cef74cdd7a7d548bdc7457ae161f617; version=5.5

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.0UbuntuCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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