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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database

Vulnerability Change Records for CVE-2019-20175

Change History

CVE Modified by MITRE 11/06/2023 10:08:39 PM

Action Type Old Value New Value
Changed 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."
 
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.
Added Reference 

								
							
							
								
							
						
								
							
								
MITRE https://www.mail-archive.com/qemu-devel%40nongnu.org/msg667396.html [No types assigned]

								
								
					

					

						Removed
						Reference
						
							
							
								
							
								
MITRE https://www.mail-archive.com/qemu-devel@nongnu.org/msg667396.html