CVE-2026-64463

usb: typec: tcpci_rt1711h: unregister TCPCI port with devres

HIGH
7.8
CVSS Score
Published: July 25, 2026 at 08:51 AM UTC
Updated: October 19, 2026 at 09:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

302c570bf36e997d55ad0d60628a2feec76954a44.19.1314309ab96ab744703871e35d829177dd9347bf6435.4.505.7.75.8745dcedb896a740825160228f98dbb5725a49f85895ec8c86e13f85b119c71d5f95491b48867955e
Vendor states this is fixed in 569f18a83eed0b0be4615f0c7bed40fb5c50e2e6 (fixed)
Vendor states this is fixed in 94b1abf1af94aa5a355e9f03675e07bccfc41c4b (fixed)
Vendor states this is fixed in ce2e36e8759dfbfe546723810c306f42f484866d (fixed)
Vendor states this is fixed in e5406c8fb71cd2f89a46300a746f6e7972e621e8 (fixed)
Vendor states this is fixed in e8da46d99d3710106e7c44db14566bf9b57386b5 (fixed)
Affected range stops below 4.20, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.5, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 5.8 (unaffected)
Vendor states this is fixed in 6.12.96 (unaffected)
Vendor states this is fixed in 6.18.39 (unaffected)
Vendor states this is fixed in 6.6.145 (unaffected)
Vendor states this is fixed in 7.1.4 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED
CWE
CWE-401

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