CVE-2026-64463
In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpci_rt1711h: unregister TCPCI port with devres rt1711h_probe() registers the TCPCI port before requesting the interrupt and enabling alert interrupts. If either of those later steps fails, the probe function returns without unregistering the TCPCI port. The explicit unregister currently only happens from the remove callback. Register a devres action immediately after tcpci_register_port() succeeds, so tcpci_unregister_port() runs on later probe failures and on driver detach. Drop the remove callback to avoid unregistering the same port twice. This issue was identified during our ongoing static-analysis research while reviewing kernel code.
Affected versions
Linux kernel versions
4.19.131,
5.4.50,
5.7.7,
5.8
and later are affected. Fixed in
6.6.145,
6.12.96,
6.18.39,
7.1.4,
7.2-rc3
and their respective stable series.
References
5 totalFrequently asked questions
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What is CVE-2026-64463?
CVE-2026-64463 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.19.131 onward and has been patched in 6.6.145, 6.12.96, 6.18.39 and others. CVE-2026-64463 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-64463?
Yes. CVE-2026-64463 has been patched. Fixed versions include 6.6.145, 6.12.96, 6.18.39 and others. If you are running Linux kernel 4.19.131 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-64463 actively exploited?
No. CVE-2026-64463 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.