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…

published February 18, 2021

CVSS
—
EPSS
0%
Percentile
28.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00356 · 28.1th percentile
Published
2021-02-18T15:05Z
EPSS history
Timeline
  • 18 FEB 15:05Z
    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…
    cvelistv5