CVE-2021-27379
Published: 18 February 2021
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.
Priority
Status
Package | Release | Status |
---|---|---|
xen Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
Ubuntu 21.04 (Hirsute Hippo) |
Needs triage
|
|
Ubuntu 20.10 (Groovy Gorilla) |
Needs triage
|
|
Ubuntu 20.04 LTS (Focal Fossa) |
Needs triage
|
|
Ubuntu 18.04 LTS (Bionic Beaver) |
Needs triage
|
|
Ubuntu 16.04 LTS (Xenial Xerus) |
Needs triage
|
|
Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|
Binaries built from this source package are in Universe and so are supported by the community. |
Notes
Author | Note |
---|---|
mdeslaur | hypervisor packages are in universe. For issues in the hypervisor, add appropriate tags to each section, ex: Tags_xen: universe-binary |