CVE-2020-27821

Name of the Vulnerable Software and Affected Versions QEMU versions prior to 5.2.0

Description A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service.

Recommendations For QEMU versions prior to 5.2.0, update to version 5.2.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the memory management API to minimize the risk of exploitation.