Wind River Support Network


LIN1018-5562 : Security Advisory - qemu - CVE-2019-20175

Created: Jan 5, 2020    Updated: Apr 22, 2022
Resolved Date: Mar 29, 2020
Found In Version:
Fix Version:
Severity: Standard
Applicable for: Wind River Linux LTS 18
Component/s: Userspace


** DISPUTED ** 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."

CREATE(Triage):(User=admin) CVE-2019-20175 (


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