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CVE-2019-20175

CVE-2019-20175

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 7.5 · High · EPSS 3.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • qemu Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:5.0-1

    Update to 1:5.0-1

  • qemu Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:5.0-1

    Update to 1:5.0-1

  • qemu Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:5.0-1

    Update to 1:5.0-1

Original sources

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