CVE Catalog

CVE-2026-90028

Low risk· EPSS 9%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.20%

9th percentile - higher than 9% of all known CVEs

Summary

In the Linux kernel, the usb: typec: hd3ss3220 driver has an issue tracking VBUS enable state per consumer. regulator_is_enabled() reports the aggregate regulator state, not whether this consumer holds an enable reference. If another consumer enables VBUS first, the driver can skip its own regulator_enable() and later attempt to drop a reference it never acquired, triggering an unbalanced regulator disable warning.

Risk Assessment

Can lead to kernel warnings, unbalanced VBUS regulator management, and potential USB Type-C port power issues. Affects power management stability.

Recommendation

Update the Linux kernel to a version containing the fix that locally tracks successful enable/disable calls. Until patched, monitor kernel logs for VBUS regulator warnings.

Related vulnerabilities

Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: usb: typec: hd3ss3220: track VBUS enable state per consumer regulator_is_enabled() reports the aggregate regulator state, not whether this consumer holds an enable reference. If another consumer enables VBUS first, the driver can skip its own regulator_enable() call and later attempt to drop a reference it never acquired, triggering an unbalanced regulator disable warning. Track successful enable and disable calls locally. Keep the state unchanged when an operation fails so a later role or ID notification retries the operation while this consumer keeps balanced references.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS