{"cve":"CVE-2012-2121","nvd":{"published":"2012-05-17T11:00:38.210","modified":"2026-06-16T23:41:01.990","status":"Modified","description":"The KVM implementation in the Linux kernel before 3.3.4 does not properly manage the relationships between memory slots and the iommu, which allows guest OS users to cause a denial of service (memory leak and host OS crash) by leveraging administrative access to the guest OS to conduct hotunplug and hotplug operations on devices.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://rhn.redhat.com/errata/RHSA-2012-0676.html","http://rhn.redhat.com/errata/RHSA-2012-0743.html","http://secunia.com/advisories/50732","http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.4","http://www.openwall.com/lists/oss-security/2012/04/19/16"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T20:24:00.973572543+00:00"},"epss":{"cve":"CVE-2012-2121","score":0.00413,"percentile":0.35622,"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."]}