Improper initialization in Linux kernel - CVE-2026-93253
Published: September 25, 2026
Vulnerability identifier: #VU152150
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-93253
CWE-ID: CWE-665
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-93253
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3