phy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator (CVE-2026-93276) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-93276

phy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator

Answer in brief

CVE-2026-93276 records a Unknown severity vulnerability in phy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 24, 2026Updated Sep 24, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=24843404efe47eab1ee88d7475a0be0f2f6fd9db <bf7fefbc26e292c08cfe7b6496b879109ef1475a \|\| >=24843404efe47eab1ee88d7475a0be0f2f6fd9db <935f6e837a83b86b073a7601f699dc2c00e01322 \|\| >=24843404efe47eab1ee88d7475a0be0f2f6fd9db <49c9b71b45081e5e5eeb507a2d6edb80d332dc59	bf7fefbc26e292c08cfe7b6496b879109ef1475a, 935f6e837a83b86b073a7601f699dc2c00e01322, 49c9b71b45081e5e5eeb507a2d6edb80d332dc59
Linux/Linuxgeneric	6.11	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to bf7fefbc26e292c08cfe7b6496b879109ef1475a if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: phy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator devm_regulator_get_exclusive() initialises the regulator with enable_count = 1, requiring the consumer to disable it before release. The devm disable action was previously only registered when the caller explicitly requested enable, so when the regulator was left in its initial enabled state without an explicit enable call, the cleanup path skipped decrementing enable_count, triggering a WARN_ON during regulator release on device removal. Fix this by always registering the devm disable action based on the actual enabled state via regulator_is_enabled(), regardless of whether the caller requested an explicit enable. This covers both the explicitly enabled case and the initial state set by devm_regulator_get_exclusive().

Quoted source text, attributed separately from HOL analysis.