{"cve":"CVE-2011-2901","nvd":{"published":"2013-10-01T17:55:02.960","modified":"2026-06-16T23:32:12.973","status":"Modified","description":"Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV guest administrators to cause a denial of service (host crash) via unspecified hypercalls that ignore virtual-address bits.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-399"],"references":["http://rhn.redhat.com/errata/RHSA-2011-1212.html","http://secunia.com/advisories/55082","http://security.gentoo.org/glsa/glsa-201309-24.xml","http://www.openwall.com/lists/oss-security/2011/09/02/2","https://bugzilla.redhat.com/show_bug.cgi?id=728042"],"products":["xen:xen"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2011-2901","score":0.0059,"percentile":0.48225,"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."]}