SB20260925126 - Improper initialization in Linux kernel sched
Published: September 25, 2026
Security Bulletin ID
SB20260925126
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 initialization (CVE-ID: CVE-2026-93253)
CWE-ID: CWE-665 - Improper Initialization
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local privileged user to trigger a kernel warning.
The vulnerability exists due to improper initialization in scheduler isolation housekeeping cpumask memory handling when booting the kernel with the "nohz_full" parameter. A local privileged user can boot a kernel configured with the "nohz_full" parameter to trigger a kernel warning.
Remediation
Install update from vendor's website.