This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2021-20181 →

DEBIAN-CVE-2021-20181

A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a...

Original description

The description as published by the source.

A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 qemu

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-4"}]}]

Debian:13 qemu

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-4"}]}]

Debian:14 qemu

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.2+dfsg-4"}]}]

References

advisory security-tracker.debian.org