SB2025120456 - Use-after-free in Linux kernel gpio driver
Published: December 4, 2025
Security Bulletin ID
SB2025120456
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-40249)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the lineinfo_changed_notify() function in drivers/gpio/gpiolib-cdev.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.