CVEvulnerability

CVE-2016-3158

3.8 LOW Published 2016-04-13 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2016-04-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
3.8 LOW — CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CVSS 2.0 ([email protected])
1.7 LOW — AV:L/AC:L/Au:S/C:P/I:N/A:N
Weaknesses
CWE-200, CWE-284

Description

The xrstor function in arch/x86/xstate.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.

Affected configurations

• xen xen (<= 4.4.0) • fedoraproject fedora 22 • fedoraproject fedora 23 • oracle vm server 3.3 • oracle vm server 3.4

Related

Weakness · CWE (2)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-284 Improper Access Control weakness

References