cvedb.io
CVE-2021-4206
HIGH · CVSS 8.2
EPSS exploitation probability: 0%
Published 2022-04-29T17:15:20.023 · Last modified 2026-06-17T04:19:13.013

Summary

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.

Affected products

qemu — qemu

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.