Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ethtool: tsinfo: don't pass ERR_PTR to genlmsg_cancel on prepare failure The goto err label leads to: genlmsg_cancel(skb, ehdr); return ret; If ethnl_tsinfo_prepare_dump() failed, it has not started a genlmsg. There's nothing to cancel, and passing an error pointer to genlmsg_cancel() would cause a crash.
References
- https://git.kernel.org/stable/c/2008f9bb1ede9b688624a241228b8e54fc74f0f6
- https://git.kernel.org/stable/c/c3fc9976f686f9a95baf87db9d387f218fd65394
- https://git.kernel.org/stable/c/d0d2c5ccd1de28368cebeef74d9c530a60eff9a5
FAQ
What is CVE-2026-63986?
CVE-2026-63986 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: ethtool: tsinfo: don't pass ERR_PTR to genlmsg_cancel on prepare failure The goto err label leads to: genlmsg_cancel(skb, ehdr);...
How severe is CVE-2026-63986?
CVSS scoring is not yet available for CVE-2026-63986. Check NVD for updates.
Is there a patch for CVE-2026-63986?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.