{"cve":"CVE-2015-7971","nvd":{"published":"2015-10-30T15:59:07.950","modified":"2026-06-17T00:33:28.007","status":"Modified","description":"Xen 3.2.x through 4.6.x does not limit the number of printk console messages when logging certain pmu and profiling hypercalls, which allows local guests to cause a denial of service via a sequence of crafted (1) HYPERCALL_xenoprof_op hypercalls, which are not properly handled in the do_xenoprof_op function in common/xenoprof.c, or (2) HYPERVISOR_xenpmu_op hypercalls, which are not properly handled in the do_xenpmu_op function in arch/x86/cpu/vpmu.c.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-19"],"references":["http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html","http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html","http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html","http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html","http://support.citrix.com/article/CTX202404"],"products":["xen:xen"],"source":"nvd","synced_at":"2026-10-19T20:37:45.466985407+00:00"},"epss":{"cve":"CVE-2015-7971","score":0.00426,"percentile":0.36882,"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."]}