CVE-2021-36144: Linux Acrn

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

The polling timer handler in ACRN before 2.5 has a use-after-free for a freed virtio device, related to devicemodel/hw/pci/virtio/*.c.

Affected products

• Linux Acrn: before 2.5 (fixed in 2.5)

Published 2021-07-02. Last modified 2026-06-17.