CVE-2021-20203
LOW
3.2
CVSS Score
Published: February 25, 2021 at 07:09 PM UTC
Updated: June 17, 2026 at 03:33 AM UTC
3 products affected across 3 vendorsDebian LinuxFedoraQEMU
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Severity
LOW3.2
Exploit prediction
EPSS 0.6%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
x_refsource_MISCExploitPatchThird Party Advisory
Source: [email protected]
https://bugs.launchpad.net/qemu/+bug/1913873x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1922441Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2021/04/msg00009.htmlMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlVendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202208-27CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- LOW
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-190
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