This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2021-20203 →
DEBIAN-CVE-2021-20203
An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU for versions up to v5.2.0. It may occur if a guest was to supply invalid v...
Original description
The description as published by the source.
An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU for versions up to v5.2.0. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:6.2+dfsg-1"}]}]
Debian:13
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:6.2+dfsg-1"}]}]
Debian:14
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:6.2+dfsg-1"}]}]
References
- advisory security-tracker.debian.org