Description (CNA)
An issue was discovered in Xen through 4.11.x, allowing x86 Intel HVM guest OS users to achieve unintended read/write DMA access, and possibly cause a denial of service (host OS crash) or gain privileges. This occurs because a backport missed a flush, and thus IOMMU updates were not always correct. NOTE: this issue exists because of an incomplete fix for CVE-2020-15565.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / n/a | affected n/a |
CWE
No CWE identifiers supplied.
References
- http://xenbits.xen.org/xsa/advisory-366.html
- https://xenbits.xen.org/xsa/advisory-366.html
- http://www.openwall.com/lists/oss-security/2021/02/23/1
- https://www.debian.org/security/2021/dsa-4888
ADP enrichment
No English description supplied.