{"cve":"CVE-2015-4164","nvd":{"published":"2015-06-15T15:59:13.367","modified":"2026-06-17T00:26:50.927","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-399"],"references":["http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html","http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html","http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html","http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html","http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00014.html"],"products":["xen:xen"],"source":"nvd","synced_at":"2026-10-19T20:36:40.444340523+00:00"},"epss":{"cve":"CVE-2015-4164","score":0.00437,"percentile":0.38002,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}