CVE-2026-98909
Published Oct 23, 2026
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.
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References
Other References
https://git.kernel.org/stable/c/0a44945b0d3422f5d81b49c97e293f3e21a8c585
https://git.kernel.org/stable/c/2bcf21ede6b097ca96cb1f7679761acca6510555
https://git.kernel.org/stable/c/43d4af5c5331ea739a49cb1097d41e502ed91ec4
https://git.kernel.org/stable/c/5a5ac0defdd42e566f1c871272370b6a3a8eef5c
https://git.kernel.org/stable/c/8af61d5bd87fd1a3bdc81fe948e7acdc8aa5bcf0
https://git.kernel.org/stable/c/b020390b4ef39adc40c800301042baf812280da1
https://git.kernel.org/stable/c/b64f763b607426ac97e44b114f0b8844ac3b86dd
Frequently Asked Questions
What is CVE-2026-98909? +
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.
How do I check if I'm vulnerable to CVE-2026-98909? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.