CVE-2026-98909: Linux kernel · net: cpsw_new: unregister devlink on port registration failure
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in b020390b4ef39adc40c800301042baf812280da1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 17:30 UTC
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
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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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
- git.kernel.org/stable/c/b020390b4ef39adc40c800301042baf812280da1 (opens in a new tab)
- git.kernel.org/stable/c/5a5ac0defdd42e566f1c871272370b6a3a8eef5c (opens in a new tab)
- git.kernel.org/stable/c/43d4af5c5331ea739a49cb1097d41e502ed91ec4 (opens in a new tab)
- git.kernel.org/stable/c/8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0 (opens in a new tab)
- git.kernel.org/stable/c/2bcf21ede6b097ca96cb1f7679761acca6510555 (opens in a new tab)
- git.kernel.org/stable/c/0a44945b0d3422f5d81b49c97e293f3e21a8c585 (opens in a new tab)
- git.kernel.org/stable/c/b64f763b607426ac97e44b114f0b8844ac3b86dd (opens in a new tab)