| CVE-2016-3159 | Date: (C)2016-04-28 (M)2023-12-22 |
The fpu_fxrstor function in arch/x86/i387.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.
CVSS Score and Metrics +CVSS Score and Metrics -| CVSS V3 Severity: | CVSS V2 Severity: |
| CVSS Score : 3.8 | CVSS Score : 1.7 |
| Exploit Score: 2.0 | Exploit Score: 3.1 |
| Impact Score: 1.4 | Impact Score: 2.9 |
| |
| CVSS V3 Metrics: | CVSS V2 Metrics: |
| Attack Vector: LOCAL | Access Vector: LOCAL |
| Attack Complexity: LOW | Access Complexity: LOW |
| Privileges Required: LOW | Authentication: SINGLE |
| User Interaction: NONE | Confidentiality: PARTIAL |
| Scope: CHANGED | Integrity: NONE |
| Confidentiality: LOW | Availability: NONE |
| Integrity: NONE | |
| Availability: NONE | |
| | |
