SB2025122674 - Memory leak in Linux kernel kernel apic
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB2025122674
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2022-50720)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the EXPORT_SYMBOL_GPL(), setup_nox2apic(), early_param(), x2apic_disable() and check_x2apic() functions in arch/x86/kernel/apic/apic.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.