Описание
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.
Ссылки
- Mailing ListThird Party Advisory
- MitigationPatchVendor Advisory
- Third Party Advisory
- PatchVendor Advisory
- Mailing ListThird Party Advisory
- MitigationPatchVendor Advisory
- Third Party Advisory
- PatchVendor Advisory
Уязвимые конфигурации
EPSS
7.8 High
CVSS3
5.9 Medium
CVSS2
Дефекты
Связанные уязвимости
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.
An issue was discovered in Xen through 4.11.x, allowing x86 Intel HVM ...
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.
EPSS
7.8 High
CVSS3
5.9 Medium
CVSS2