SB2026091692 - Use-after-free in Linux kernel trace
Published: September 16, 2026
Security Bulletin ID
SB2026091692
CSH 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 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-90014)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a use-after-free in the show_event_filters and show_event_triggers tracing files when reading files associated with a trace array while the trace array is removed. A local user can read one of these files while the associated trace array is removed to cause a denial of service.
Remediation
Install update from vendor's website.