Описание
An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.
Пакеты
| Пакет | Статус | Версия исправления | Релиз | Тип |
|---|---|---|---|---|
| qemu | fixed | 1:7.2+dfsg-1 | package | |
| qemu | ignored | bullseye | package | |
| qemu | postponed | buster | package |
Примечания
https://bugzilla.redhat.com/show_bug.cgi?id=2148506
https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg04143.html
https://gitlab.com/qemu-project/qemu/-/issues/1336
Pre-requisite 1: https://gitlab.com/qemu-project/qemu/-/commit/61c34fc194b776ecadc39fb26b061331107e5599 (v7.2.0-rc3)
Pre-requisite 2: https://gitlab.com/qemu-project/qemu/-/commit/8efec0ef8bbc1e75a7ebf6e325a35806ece9b39f (v7.2.0-rc3)
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/6dbbf055148c6f1b7d8a3251a65bd6f3d1e1f622 (v7.2.0-rc3)
EPSS
Связанные уязвимости
An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.
An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.
An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.
EPSS