Описание
Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.
Пакеты
| Пакет | Статус | Версия исправления | Релиз | Тип |
|---|---|---|---|---|
| qemu | fixed | 1:2.4+dfsg-1a | package | |
| qemu | not-affected | jessie | package | |
| qemu | not-affected | wheezy | package | |
| qemu | not-affected | squeeze | package | |
| qemu-kvm | not-affected | package | ||
| xen | fixed | 4.4.0-1 | package | |
| xen | not-affected | wheezy | package | |
| xen | not-affected | squeeze | package |
Примечания
Xen switched to qemu-system in 4.4.0-1
pci_piix3_xen_ide_unplug introduced in http://git.qemu.org/?p=qemu.git;a=commitdiff;h=679f4f8b178e7c66fbc2f39c905374ee8663d5d8 (v1.0-rc0)
BlockDriverState converted to BlockBackend in http://git.qemu.org/?p=qemu.git;a=commitdiff;h=4be746345f13e99e468c60acbd3a355e8183e3ce (v2.2.0-rc0)
Fixed by: http://git.qemu.org/?p=qemu.git;a=commitdiff;h=6cd387833d05e8ad31829d97e474dc420625aed9 (v2.4.0-rc4)
http://xenbits.xen.org/xsa/advisory-139.html
Связанные уязвимости
Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.
Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.
Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.
Use-after-free vulnerability in QEMU in Xen 4.5.x and earlier does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.
Уязвимость гипервизора Xen, позволяющая нарушителю получить привилегии, позволяющие выполнять отключение блочных устройств