Memory leak in Linux kernel - CVE-2022-50720
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120335
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2022-50720
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2022-50720
Install update from vendor's repository.