CVE-2021-27379 | BDVDB-2026-149408 Detail

Description#

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.

Impact#

No impact statement in the source data.

Weaknesses#

No weakness recorded in the source data.

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

Exploit#

No public exploit known

History#

Version 12021-02-18Record published in the CVE List.
Version 22024-08-03Most recent update recorded in the CVE List.