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CVE-2026-64463

HIGHCVSS 7.8/10EPSS 0.18%

Last modified

CVE-2026-64463 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.18%

7.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 302c570bf36e997d55ad0d60628a2feec76954a4, < ce2e36e8759dfbfe546723810c306f42f484866d; >= 302c570bf36e997d55ad0d60628a2feec76954a4, < 94b1abf1af94aa5a355e9f03675e07bccfc41c4b; >= 302c570bf36e997d55ad0d60628a2feec76954a4, < e5406c8fb71cd2f89a46300a746f6e7972e621e8; >= 302c570bf36e997d55ad0d60628a2feec76954a4, < 569f18a83eed0b0be4615f0c7bed40fb5c50e2e6; >= 302c570bf36e997d55ad0d60628a2feec76954a4, < e8da46d99d3710106e7c44db14566bf9b57386b5; 4309ab96ab744703871e35d829177dd9347bf643; 895ec8c86e13f85b119c71d5f95491b48867955e; 745dcedb896a740825160228f98dbb5725a49f85; >= 4.19.131, < 4.20; >= 5.4.50, < 5.5; >= 5.7.7, < 5.8
LinuxLinux5.8

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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.
How severe is CVE-2026-64463?
CVE-2026-64463 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-64463?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST