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VulnerabilityPublished Updated

CVE-2026-98909: Linux kernel · net: cpsw_new: unregister devlink on port registration failure

Affects Linux kernelSource CVE Database V5

0

Not known to be exploited · fixed in b020390b4ef39adc40c800301042baf812280da1 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:18 UTC

Severity
Low

Rated Low by Threat Radar's AI analysis · CVSS not yet scored by NVD

EPSS
0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in b020390b4ef39adc40c800301042baf812280da1, b64f763b607426ac97e44b114f0b8844ac3b86dd, 43d4af5c5331ea739a49cb1097d41e502ed91ec4 +4

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ ed3525eda4c4983fb8509e488de0a351788041ba, < b020390b4ef39adc40c800301042baf812280da1
Fixed in
  • b020390b4ef39adc40c800301042baf812280da1
LinuxLinuxAffected
  • ≥ ed3525eda4c4983fb8509e488de0a351788041ba, < b64f763b607426ac97e44b114f0b8844ac3b86dd
Fixed in
  • b64f763b607426ac97e44b114f0b8844ac3b86dd
LinuxLinuxAffected
  • ≥ ed3525eda4c4983fb8509e488de0a351788041ba, < 43d4af5c5331ea739a49cb1097d41e502ed91ec4
Fixed in
  • 43d4af5c5331ea739a49cb1097d41e502ed91ec4
LinuxLinuxAffected
  • ≥ ed3525eda4c4983fb8509e488de0a351788041ba, < 8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0
Fixed in
  • 8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0
LinuxLinuxAffected
  • ≥ ed3525eda4c4983fb8509e488de0a351788041ba, < 5a5ac0defdd42e566f1c871272370b6a3a8eef5c
Fixed in
  • 5a5ac0defdd42e566f1c871272370b6a3a8eef5c
LinuxLinuxAffected
  • ≥ ed3525eda4c4983fb8509e488de0a351788041ba, < 2bcf21ede6b097ca96cb1f7679761acca6510555
Fixed in
  • 2bcf21ede6b097ca96cb1f7679761acca6510555

AI-suggested

A fix is available in the Linux kernel commits identified by the fixedVersions hashes. Users should update their Linux kernel from version 5.5 to a fixed version containing these commits to resolve the issue.

Description

CVE-2026-98909 is a Linux kernel vulnerability affecting version 5.5 where the devlink instance is not properly unregistered if port registration fails during CPSW probe. This results in leftover devlink registrations after a failed probe. The issue has been fixed by adding proper devlink cleanup on failure paths.

References

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