CVE-2021-4207

HIGH Year: 2021
CVSS v3 Score
8.2
High
CVSS v2 Score
4.6
Medium
Weakness Type
CWE-362
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Vulnerability Description

A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

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