SB20260325179 - Incorrect Control Flow Scoping in Linux kernel regulator driver
Published: March 25, 2026
Security Bulletin ID
SB20260325179
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Incorrect Control Flow Scoping (CVE-ID: CVE-2026-23283)
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper reference counting in the fp9931_hwmon_read() function when handling hardware monitoring requests. A local user can trigger a failed regmap_read() call to cause a power management (PM) runtime reference leak.
The issue specifically occurs in the regulator driver for the FP9931 chip, where failure to release a PM runtime reference after a hardware register read failure leads to a resource leak that can accumulate over time.
Remediation
Install update from vendor's website.