CVE-2021-20203

low

Description

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.

References

https://bugs.launchpad.net/qemu/+bug/1913873

https://bugzilla.redhat.com/show_bug.cgi?id=1922441

https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html

https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html

https://security.gentoo.org/glsa/202208-27

Details

Source: Mitre, NVD

Published: 2021-02-25

Risk Information

CVSS v2

Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

Severity: Low

CVSS v3

Base Score: 3.2

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

Severity: Low