Integer Overflow or Wraparound Affecting qemu package, versions <1:6.2+dfsg-1
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-QEMU-1066271
- published 1 Feb 2021
- disclosed 25 Feb 2021
Introduced: 1 Feb 2021
CVE-2021-20203 Open this link in a new tabHow to fix?
Upgrade Debian:unstable
qemu
to version 1:6.2+dfsg-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu
package and not the qemu
package as distributed by Debian
.
See How to fix?
for Debian:unstable
relevant fixed versions and status.
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://security-tracker.debian.org/tracker/CVE-2021-20203
- 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://security.gentoo.org/glsa/202208-27
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html