#VU122071 Time-of-check Time-of-use (TOCTOU) Race Condition in Xen - CVE-2025-58151
Published: January 27, 2026
Vulnerability identifier: #VU122071
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:U/U:Clear
CVE-ID: CVE-2025-58151
CWE-ID: CWE-367
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Xen
Xen
Software vendor:
Xen Project
Xen Project
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in varstored. A local user with kernel level access in a VM can escalate privilege via gaining code execution within varstored.
Remediation
Install updates from vendor's website.