Detections
Analytics
CVE-2021-4207
high
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.
References
https://www.debian.org/security/2022/dsa-5133
https://starlabs.sg/advisories/21-4207/
https://security.gentoo.org/glsa/202208-27
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html