cve-2019-20175
Vulnerability from cvelistv5
Published
2019-12-31 03:27
Modified
2024-08-05 02:39
Severity ?
EPSS score ?
Summary
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
| ▼ | URL | Tags | |
|---|---|---|---|
| cve@mitre.org | https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01651.html | Exploit, Mailing List, Third Party Advisory | |
| cve@mitre.org | https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg03869.html | Mailing List, Third Party Advisory | |
| cve@mitre.org | https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg00597.html | Third Party Advisory | |
| cve@mitre.org | https://lists.nongnu.org/archive/html/qemu-devel/2019-11/msg02165.html | Mailing List, Patch, Third Party Advisory | |
| cve@mitre.org | https://www.mail-archive.com/qemu-devel%40nongnu.org/msg667396.html |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.