The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
Published 2015-06-15 15:59:13
Updated 2018-10-30 16:26:54
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Denial of service

Exploit prediction scoring system (EPSS) score for CVE-2015-4164

0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2015-4164

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.9
MEDIUM AV:L/AC:L/Au:N/C:N/I:N/A:C
3.9
6.9
NIST

CWE ids for CVE-2015-4164

  • Assigned by: nvd@nist.gov (Primary)

References for CVE-2015-4164

Products affected by CVE-2015-4164

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