CVE-2014-1895

描述

Off-by-one error in the flask_security_avc_cachestats function in xsm/flask/flask_op.c in Xen 4.2.x and 4.3.x, when the maximum number of physical CPUs are in use, allows local users to cause a denial of service (host crash) or obtain sensitive information from hypervisor memory by leveraging a FLASK_AVC_CACHESTAT hypercall, which triggers a buffer over-read.

如何修補 CVE-2014-1895

要修補 CVE-2014-1895,請將受影響套件升級到下列已修補版本。

• Debian/xen—升級至 4.4.0-1 或更新版本

CVE-2014-1895 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, < 4.4.0-1

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2014-1895