SB2026021664 - Use-after-free in Linux kernel events
Published: February 16, 2026
Security Bulletin ID
SB2026021664
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-2026-23127)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the perf_mmap_rb() function in kernel/events/core.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.