Vulnerability Details CVE-2021-27379
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 49.9%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 5.9
Products affected by CVE-2021-27379
-
cpe:2.3:o:debian:debian_linux:10.0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-