Note:
This project will be discontinued after December 13, 2021. [more]
2017-07-04
The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220.
| Products | Xen |
| Type | Information Exposure (CWE-200) |
| First patch | - None (likely due to unavailable code) |
| Links |
• http://www.debian.org/security/2017/dsa-3969
• https://xenbits.xen.org/xsa/advisory-220.html • http://www.securityfocus.com/bid/99167 • http://www.securitytracker.com/id/1038730 • https://security.gentoo.org/glsa/201708-03 |