CVE-2015-2756
EPSS 0.45%
描述
QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.
如何修補 CVE-2015-2756
要修補 CVE-2015-2756,請將受影響套件升級到下列已修補版本。
- Debian/qemu—升級至 1:2.3+dfsg-3 或更新版本
- Debian/xen—升級至 4.2.0~rc2-1 或更新版本
CVE-2015-2756 正在被利用嗎?
低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 1:2.3+dfsg-3
- from 0, < 4.2.0~rc2-1