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.
References
Link | Resource |
---|---|
http://www.openwall.com/lists/oss-security/2021/02/23/1 | Mailing List Third Party Advisory |
http://xenbits.xen.org/xsa/advisory-366.html | Mitigation Patch Vendor Advisory |
https://www.debian.org/security/2021/dsa-4888 | Third Party Advisory |
https://xenbits.xen.org/xsa/advisory-366.html | Patch Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2021-02-18T15:05:25
Updated: 2021-04-11T11:06:19
Reserved: 2021-02-18T00:00:00
Link: CVE-2021-27379
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-02-18T17:15:15.867
Modified: 2022-05-27T17:09:48.977
Link: CVE-2021-27379
JSON object: View
Redhat Information
No data.
CWE