CVE-2012-3495

描述

The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.

如何修補 CVE-2012-3495

要修補 CVE-2012-3495,請將受影響套件升級到下列已修補版本。

• Debian/xen—升級至 4.1.3-2 或更新版本

CVE-2012-3495 正在被利用嗎?

低 — EPSS 為 0.1%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 4.1.3-2

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2012-3495