CVE-2021-3507

2021-05-0615:16:14

CWE-119

redhat

www.cve.org

qemu

floppy disk

heap overflow

dma

dos

information leakage

cve-2021-3507

AI Score

7.1

Confidence

High

EPSS

0.001

Percentile

29.0%

JSON

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.

CNA Affected

[
  {
    "product": "QEMU",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "up to 6.0.0 (including)"
      }
    ]
  }
]