Bug 2507063 (CVE-2026-64463) - CVE-2026-64463 kernel: usb: typec: tcpci_rt1711h: unregister TCPCI port with devres
Summary: CVE-2026-64463 kernel: usb: typec: tcpci_rt1711h: unregister TCPCI port with ...
Keywords:
Status: NEW
Alias: CVE-2026-64463
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-25 10:03 UTC by OSIDB Bzimport
Modified: 2026-07-29 22:30 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-07-25 10:03:05 UTC
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.

Comment 1 Mauro Matteo Cascella 2026-07-29 22:27:00 UTC
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026072544-CVE-2026-64463-1ce0@gregkh/T


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