CVE-2026-98909: Linux kernel · net: cpsw_new: unregister devlink on port registration failure
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 01:29 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
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
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
In the Linux kernel, the following vulnerability has been resolved: net: cpsw_new: unregister devlink on port registration failure cpsw_probe() registers devlink before registering the CPSW ports. If cpsw_register_ports() fails, the error path only unregisters the notifiers and then releases the lower level resources. It does not undo the successful cpsw_register_devlink() call, leaving the devlink instance and its parameters registered after probe has failed. Add a devlink cleanup label for the path where devlink registration has already succeeded, and use it when port registration fails.
References
- ubuntu.com/security/CVE-2026-98909 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98909 (opens in a new tab)
- git.kernel.org/stable/c/0a44945b0d3422f5d81b49c97e293f3e21a8c585 (opens in a new tab)
- git.kernel.org/stable/c/2bcf21ede6b097ca96cb1f7679761acca6510555 (opens in a new tab)
- git.kernel.org/stable/c/43d4af5c5331ea739a49cb1097d41e502ed91ec4 (opens in a new tab)
- git.kernel.org/stable/c/5a5ac0defdd42e566f1c871272370b6a3a8eef5c (opens in a new tab)
- git.kernel.org/stable/c/8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0 (opens in a new tab)
- git.kernel.org/stable/c/b020390b4ef39adc40c800301042baf812280da1 (opens in a new tab)
- git.kernel.org/stable/c/b64f763b607426ac97e44b114f0b8844ac3b86dd (opens in a new tab)