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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-64329 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove The threaded IRQ handler ccg_irq_handler() calls ucsi_notify_common(), which on a connector-change event calls ucsi_connector_change() and schedules connector work. In ucsi_ccg_remove(), ucsi_destroy() frees uc->ucsi (kfree) before free_irq() is called, so a handler invocation already in flight may access the freed object after ucsi_destroy(). CPU 0 (remove) | CPU 1 (threaded IRQ) ucsi_destroy(uc->ucsi) | ccg_irq_handler() kfree(ucsi) // FREE | ucsi_notify_common(uc->ucsi) // USE Move free_irq() before ucsi_destroy() in the remove path. It is kept after ucsi_unregister(): ucsi_unregister() cancels connector work whose handler issues GET_CONNECTOR_STATUS through ucsi_send_command_common(), which waits for a completion that is signalled from the IRQ handler, so the IRQ must stay active until that work has been cancelled. The probe error path already orders free_irq() before ucsi_destroy(). This bug was found by static analysis.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/1a160076d3d0dcd4a98a4599ad96eec0790b099b kernel.org
https://git.kernel.org/stable/c/1f0bdc2884b67de337215079bba166df0cdf4ac5 kernel.org
https://git.kernel.org/stable/c/86c9ee928c4a370e323e432aaf8dca79c4ba7c85 kernel.org
https://git.kernel.org/stable/c/99381e762273a2410a3f0216000be32b013c0ea9 kernel.org
https://git.kernel.org/stable/c/c32df11147822d22facee8fa30c2e8971d12f426 kernel.org
https://git.kernel.org/stable/c/dbb500bad02146b388041877574829016591ddc8 kernel.org
https://git.kernel.org/stable/c/f1adeb1ff8bef1467d6961059810795d02bbad5d kernel.org
https://git.kernel.org/stable/c/f5c772b76bbd95de8be51cf849c6098f6af6fcf9 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-64329
NVD Published Date:
07/25/2026
NVD Last Modified:
07/25/2026
Source:
kernel.org