Description
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.
Published: 2019-12-31
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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History

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T02:39:09.821Z

Reserved: 2019-12-31T00:00:00.000Z

Link: CVE-2019-20175

cve-icon Vulnrichment

Updated: 2024-08-05T02:39:09.821Z

cve-icon NVD

Status : Modified

Published: 2019-12-31T04:15:10.503

Modified: 2024-11-21T04:38:09.763

Link: CVE-2019-20175

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses