arch/x86/kvm/emulate.c in the Linux kernel through 4.9.3 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free) via a crafted application that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt.
http://www.debian.org/security/2017/dsa-3791
http://www.openwall.com/lists/oss-security/2017/01/13/7
http://www.securityfocus.com/bid/95430
http://www.securitytracker.com/id/1037603
https://bugzilla.redhat.com/show_bug.cgi?id=1413001
https://github.com/torvalds/linux/commit/129a72a0d3c8e139a04512325384fe5ac119e74d
Source: MITRE
Published: 2017-01-15
Updated: 2018-08-24
Type: CWE-200
Base Score: 3.6
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:P
Impact Score: 4.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 7.1
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Impact Score: 5.2
Exploitability Score: 1.8
Severity: HIGH