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.
References
Link | Resource |
---|---|
https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01651.html | Exploit Mailing List Third Party Advisory |
https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg03869.html | Mailing List Third Party Advisory |
https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg00597.html | Third Party Advisory |
https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02165.html | Mailing List Patch Third Party Advisory |
https://www.mail-archive.com/qemu-devel%40nongnu.org/msg667396.html |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2019-12-31T03:27:40
Updated: 2024-06-26T19:36:00.122Z
Reserved: 2019-12-31T00:00:00
Link: CVE-2019-20175
JSON object: View
NVD Information
Status : Modified
Published: 2019-12-31T04:15:10.503
Modified: 2024-06-26T20:15:13.070
Link: CVE-2019-20175
JSON object: View
Redhat Information
No data.
CWE