CVE-2014-8594
xen - security update
EPSS 1.3%
描述
The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP).
如何修補 CVE-2014-8594
要修補 CVE-2014-8594,請將受影響套件升級到下列已修補版本。
- Debian/xen—升級至 4.4.1-4 或更新版本
- Debian/xen—升級至 4.1.4-3+deb7u4 或更新版本
CVE-2014-8594 正在被利用嗎?
低 — EPSS 為 1.3%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 4.4.1-4
- from 0, < 4.1.4-3+deb7u4