CVEvulnerability
CVE-2021-20203
3.2 LOW
Official page ↗
- Status
- Modified
- Published
- 2021-02-25
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 3.2 LOW — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
- CVSS 2.0 ([email protected])
- 2.1 LOW — AV:L/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-190
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.
Affected configurations
• qemu qemu (<= 5.2.0)
• fedoraproject fedora 33
• debian debian linux 9.0
• debian debian linux 10.0
Related
Weakness · CWE (1)
- CWE-190 Integer Overflow or Wraparound weakness
References
- https://bugs.launchpad.net/qemu/+bug/1913873 Exploit, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1922441 Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202208-27 Third Party Advisory
- https://bugs.launchpad.net/qemu/+bug/1913873 Exploit, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1922441 Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202208-27 Third Party Advisory