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.
Metrics
CVSS 3.0 7.8/10
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://www.securityfocus.com/bid/94471Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037340Third Party Advisory, VDB Entry
- http://xenbits.xen.org/xsa/advisory-191.htmlPatch, Vendor Advisory
- https://security.gentoo.org/glsa/201612-56
- https://support.citrix.com/article/CTX218775Patch, Third Party Advisory
- http://www.securityfocus.com/bid/94471Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037340Third Party Advisory, VDB Entry
- http://xenbits.xen.org/xsa/advisory-191.htmlPatch, Vendor Advisory
- https://security.gentoo.org/glsa/201612-56
- https://support.citrix.com/article/CTX218775Patch, Third Party Advisory
Timeline
- Published
- Jan 23, 2017
- Last modified
- Jun 17, 2026
- NVD status
- Modified