CVE-2016-9386

7.8 HIGH

Published: January 23, 2017 Modified: May 13, 2026

Description

The x86 emulator in Xen does not properly treat x86 NULL segments as unusable when accessing memory, which might allow local HVM guest users to gain privileges via vectors involving "unexpected" base/limit values.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://www.securityfocus.com/bid/94471

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://www.securitytracker.com/id/1037340

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://xenbits.xen.org/xsa/advisory-191.html

Source: cve@mitre.org

Patch Vendor Advisory

https://security.gentoo.org/glsa/201612-56

Source: cve@mitre.org

https://support.citrix.com/article/CTX218775

Source: cve@mitre.org

Patch Third Party Advisory

http://www.securityfocus.com/bid/94471