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LIN1019-3886 : Security Advisory - qemu - CVE-2019-20175

Created: Jan 5, 2020    Updated: Mar 29, 2020
Resolved Date: Mar 29, 2020
Found In Version: 10.19.45.1
Severity: Standard
Applicable for: Wind River Linux LTS 19
Component/s: Userspace

Description

** 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|https://nvd.nist.gov/vuln/detail/CVE-2019-20175]

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