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Vulnerability · Published Sep 25, 2026 · Assigned by Linux

CVE-2026-100079usb: typec: ucsi: unregister debugfs entries on teardown

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.1%top 98.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.12.111-1DEBIAN-CVE-2026-100079
Debian:14linux7.2.6-1DEBIAN-CVE-2026-100079
Debian:12linux-6.126.12.111-1~deb12u1DEBIAN-CVE-2026-100079
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux7.0.0-42.42USN-8959-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17USN-8959-1
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18USN-8959-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1USN-8959-1
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17USN-8959-1
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17USN-8960-1
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16USN-8959-1
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-100079
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-100079
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-100079
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-100079

Affected products (as reported)

VendorProductVersions
Linux Linux df0383ffad64dc09954a60873c1e202b47f08d90 – before fb7393519908befdc094be4ea913f582adbf2f7cdf0383ffad64dc09954a60873c1e202b47f08d90 – before 7177c215e69658adbd2f2fc5b72e14be9208d2badf0383ffad64dc09954a60873c1e202b47f08d90 – before 1f44d001620fd3caa30619a9bc73e9d15555408bdf0383ffad64dc09954a60873c1e202b47f08d90 – before 62efee351566321ad72a4abaf6eb7d972590585ddf0383ffad64dc09954a60873c1e202b47f08d90 – before eed73a65ab609b79d53de88cccc34b36dfe753c4
Linux Linux 6.6

References