CVE-2026-93276phy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator
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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().
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 24843404efe47eab1ee88d7475a0be0f2f6fd9db before bf7fefbc26e292c08cfe7b6496b879109ef1475a; 24843404efe47eab1ee88d7475a0be0f2f6fd9db builds before 935f6e837a83b86b073a7601f699dc2c00e01322; 24843404efe47eab1ee88d7475a0be0f2f6fd9db builds before 49c9b71b45081e5e5eeb507a2d6edb80d332dc59 | CNA record |
References
- https://git.kernel.org/stable/c/bf7fefbc26e292c08cfe7b6496b879109ef1475a
- https://git.kernel.org/stable/c/935f6e837a83b86b073a7601f699dc2c00e01322
- https://git.kernel.org/stable/c/49c9b71b45081e5e5eeb507a2d6edb80d332dc59
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.