SB2022012124 - Incomplete cleanup in Linux kernel x86 kvm
Published: January 21, 2022
Security Bulletin ID
SB2022012124
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) Incomplete cleanup (CVE-ID: CVE-2021-4032)
CWE-ID: CWE-459 - Incomplete cleanup
CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local privileged user to perform a denial of service (DoS) attack.
The vulnerability exists due to incomplete cleanup error within the export_symbol_gpl(), kvm_lapic_reset() and kvm_create_lapic() functions in arch/x86/kvm/lapic.c. A local privileged user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.