cvedb.io
CVE-2021-3507
MEDIUM · CVSS 6.1
EPSS exploitation probability: 0%
Published 2021-05-06T16:15:07.547 · Last modified 2026-06-17T04:05:15.387

Summary

A heap buffer overflow was found in the floppy disk emulator of QEMU up to 6.0.0 (including). It could occur in fdctrl_transfer_handler() in hw/block/fdc.c while processing DMA read data transfers from the floppy drive to the guest system. A privileged guest user could use this flaw to crash the QEMU process on the host resulting in DoS scenario, or potential information leakage from the host memory.

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.