VYPR
High severity8.2NVD Advisory· Published Apr 29, 2022· Updated Jun 17, 2026

CVE-2021-4206

CVE-2021-4206

Description

A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process.

AI Insight

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Affected products

168

Patches

Vulnerability mechanics

References

6

News mentions

0

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