Описание
Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d chipsets that do not have interrupt remapping, allows guest OS users to gain host OS privileges by "using DMA to generate MSI interrupts by writing to the interrupt injection registers."
Отчет
This issue did affect the versions of kernel package as shipped with Red Hat Enterprise Linux 5. This issue did affect the versions of kvm package as shipped with Red Hat Enterprise Linux 5. Red Hat cannot backport the fix though as it is too invasive and has a high risk of introducing severe regressions at this point in the Red Hat Enterprise Linux 5 life-cycle. As such, Red Hat recommends that users of KVM on Red Hat Enterprise Linux 5 only use PCI passthrough with trusted guests. This issue did affect the versions of kernel package as shipped with Red Hat Enterprise Linux 6. This issue did not affect the versions of kernel-rt package as shipped with Red Hat Enterprise MRG as it did not provide support for virtualization. For further info please refer to the knowledge base article https://access.redhat.com/knowledge/articles/66747.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | kvm | Affected | ||
| Red Hat Enterprise Linux Extended Update Support 5.7 | kernel-xen | Affected | ||
| Red Hat Enterprise Linux 5 | kernel | Fixed | RHSA-2011:1479 | 29.11.2011 |
| Red Hat Enterprise Linux 5.6 EUS - Server Only | kernel | Fixed | RHSA-2012:0358 | 06.03.2012 |
| Red Hat Enterprise Linux 6 | kernel | Fixed | RHSA-2011:1189 | 23.08.2011 |
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Дополнительная информация
Статус:
7.4 High
CVSS2
Связанные уязвимости
Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d chipsets that do not have interrupt remapping, allows guest OS users to gain host OS privileges by "using DMA to generate MSI interrupts by writing to the interrupt injection registers."
Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d chipsets that do not have interrupt remapping, allows guest OS users to gain host OS privileges by "using DMA to generate MSI interrupts by writing to the interrupt injection registers."
Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough ...
Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d chipsets that do not have interrupt remapping, allows guest OS users to gain host OS privileges by "using DMA to generate MSI interrupts by writing to the interrupt injection registers."
ELSA-2011-1479: kernel security, bug fix, and enhancement update (IMPORTANT)
7.4 High
CVSS2