SB20260925105 - Improper resource shutdown or release in Linux kernel phy renesas driver
Published: September 25, 2026
Security Bulletin ID
SB20260925105
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper resource shutdown or release (CVE-ID: CVE-2026-93276)
CWE-ID: CWE-404 - Improper Resource Shutdown or Release
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to trigger a warning condition during regulator release.
The vulnerability exists due to improper resource shutdown or release in rcar_gen3_phy_usb2_vbus_regulator_get_exclusive_enable() when removing a device while the VBUS regulator remains enabled. A local user can remove a device under this condition to trigger a warning condition during regulator release.
Remediation
Install update from vendor's website.