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Improper Locking

CVE-2021-4147

Medium
4.9/10

Summary

A flaw was found in the libvirt libxl driver. A malicious guest could continuously reboot itself and cause libvirtd on the host to deadlock or crash, resulting in a denial of service condition.

  • LOW
  • LOCAL
  • NONE
  • NONE
  • NONE
  • COMPLETE

CWE-667 - Improper Locking

The software does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

References

Advisory Timeline

  • Published