{"cve":"CVE-2009-1242","nvd":{"published":"2009-04-06T14:30:00.390","modified":"2026-06-16T23:06:50.553","status":"Modified","description":"The vmx_set_msr function in arch/x86/kvm/vmx.c in the VMX implementation in the KVM subsystem in the Linux kernel before 2.6.29.1 on the i386 platform allows guest OS users to cause a denial of service (OOPS) by setting the EFER_LME (aka \"Long mode enable\") bit in the Extended Feature Enable Register (EFER) model-specific register, which is specific to the x86_64 platform.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=16175a796d061833aacfbd9672235f2d2725df65","http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html","http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html","http://openwall.com/lists/oss-security/2009/04/01/3","http://patchwork.kernel.org/patch/15549/"],"products":["canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora","linux:linux_kernel","opensuse:opensuse"],"source":"nvd","synced_at":"2026-10-19T19:54:07.895733559+00:00"},"epss":{"cve":"CVE-2009-1242","score":0.00473,"percentile":0.40895,"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."]}