SUSE CVE-2025-58151

varstored is a component of the Xapi toolstack handling UEFI Variables for a VM. It has a communication path with OVMF inside the VM involving mapping a buffer prepared by OVMF. Within varstored, there were insufficient compiler barriers, creating TOCTOU issues with data in the shared buffer. The...

PT-2026-5017

Name of the Vulnerable Software and Affected Versions Xen affected versions not specified Description The varstored component of the Xapi toolstack, which manages UEFI Variables for virtual machines, contains insufficient compiler barriers. This leads to Time-of-Check to Time-of-Use TOCTOU issues...