Use-After-Free Vulnerability in ACRN Hypervisor Affecting Virtio Devices
CVE-2021-36144

7.5HIGH

Key Information:

Vendor
Linux
Status
Acrn
Vendor
CVE Published:
2 July 2021

Summary

The ACRN Hypervisor prior to version 2.5 contains a use-after-free vulnerability within the polling timer handler. This issue arises when a freed virtio device is incorrectly referenced, potentially leading to system instability or unintended behavior. The problem is located in the device model code, specifically within the handling of PCI virtio devices, making it critical for system administrators to apply updates to mitigate potential security risks.

References

https://github.com/projectacrn/acrn-hypervisor/pull/6268/...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.