Resource management error in Xen - CVE-2022-42330
Published: January 25, 2023
Vulnerability identifier: #VU71528
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-42330
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.
The vulnerability exists due to an error when performing Soft Reset with kexec. A malicious guest can continuously execute kexec and prevent further domain administration, like starting new guests or adding/removing resources to or from any existing guest.
Affected software
Xen
How to mitigate CVE-2022-42330
Install updates from vendor's website.