This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2020-27821 →

DEBIAN-CVE-2020-27821

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 wr...

Original description

The description as published by the source.

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. This flaw affects QEMU versions prior to 5.2.0.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 qemu

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-3"}]}]

Debian:13 qemu

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-3"}]}]

Debian:14 qemu

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-3"}]}]

References

advisory security-tracker.debian.org