CVE-2026-100079

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxdf0383ffad64dc09954a60873c1e202b47f08d90 < fb7393519908befdc094be4ea913f582adbf2f7caffected
LinuxLinuxdf0383ffad64dc09954a60873c1e202b47f08d90 < 7177c215e69658adbd2f2fc5b72e14be9208d2baaffected
LinuxLinuxdf0383ffad64dc09954a60873c1e202b47f08d90 < 1f44d001620fd3caa30619a9bc73e9d15555408baffected
LinuxLinuxdf0383ffad64dc09954a60873c1e202b47f08d90 < 62efee351566321ad72a4abaf6eb7d972590585daffected
LinuxLinuxdf0383ffad64dc09954a60873c1e202b47f08d90 < eed73a65ab609b79d53de88cccc34b36dfe753c4affected
LinuxLinux6.6affected
LinuxLinux0 < 6.6unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References