CVE-2026-100079
In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: unregister debugfs entries on teardown ucsi_register() creates per-instance debugfs entries, but ucsi_unregister() keeps them around until ucsi_destroy(). Drivers like ucsi_glink that unregister/register the same UCSI instance across remoteproc restart then try to create an already existing debugfs directory and log: debugfs: 'pmic_glink.ucsi.0' already exists in 'ucsi' Unregister debugfs entries as part of ucsi_unregister(), and clear ucsi->debugfs after freeing it so repeated unregister paths remain safe.
취약점 유형
In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: unregister debugfs entries on teardown ucsi_register() creates per-instance debugfs entries, but ucsi_unregister() keeps them around until ucsi_destroy(). Drivers like ucsi_glink that unregister/register the same UCSI instance across remoteproc restart then try to create an already existing debugfs directory and log: debugfs: 'pmic_glink.ucsi.0' already exists in 'ucsi' Unregister debugfs entries as part of ucsi_unregister(), and clear ucsi->debugfs after freeing it so repeated unregister paths remain safe.
참고 자료
- https://git.kernel.org/stable/c/1f44d001620fd3caa30619a9bc73e9d15555408b
- https://git.kernel.org/stable/c/62efee351566321ad72a4abaf6eb7d972590585d
- https://git.kernel.org/stable/c/7177c215e69658adbd2f2fc5b72e14be9208d2ba
- https://git.kernel.org/stable/c/eed73a65ab609b79d53de88cccc34b36dfe753c4
- https://git.kernel.org/stable/c/fb7393519908befdc094be4ea913f582adbf2f7c
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