Improper Check for Unusual or Exceptional Conditions Affecting qemu package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.28% (69th percentile)

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  • Snyk IDSNYK-DEBIAN8-QEMU-540353
  • published31 Dec 2019
  • disclosed31 Dec 2019

Introduced: 31 Dec 2019

CVE-2019-20175  (opens in a new tab)
CWE-754  (opens in a new tab)

How to fix?

There is no fixed version for Debian:8 qemu.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

An issue was discovered in ide_dma_cb() in hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest system can crash the QEMU process in the host system via a special SCSI_IOCTL_SEND_COMMAND. It hits an assertion that implies that the size of successful DMA transfers there must be a multiple of 512 (the size of a sector). NOTE: a member of the QEMU security team disputes the significance of this issue because a "privileged guest user has many ways to cause similar DoS effect, without triggering this assert.

CVSS Scores

version 3.1