{"id":"CVE-2009-1242","aliases":["BELL-CVE-2009-1242","DSA-1787-1","DSA-1800-1","EUVD-2009-1241","GHSA-wqvc-c395-66j7"],"status":"published","title":"The vmx_set_msr function in arch/x86/kvm/vmx.c in the VMX implementation in the KVM subsystem in...","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.","severity":{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00473,"percentile":0.41143,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2009-04-06T14:00:00Z","modified":"2026-06-16T23:06:50Z","affected":[{"source":"osv","ecosystem":"Debian:4.0","package":"linux-2.6.24","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.24-6~etchnhalf.8etch1"}]}],"versions":["2.6.24-5~etchnhalf.1","2.6.24-6~etchnhalf.1","2.6.24-6~etchnhalf.2","2.6.24-6~etchnhalf.3","2.6.24-6~etchnhalf.4","2.6.24-6~etchnhalf.5","2.6.24-6~etchnhalf.6","2.6.24-6~etchnhalf.7","2.6.24-6~etchnhalf.8"],"bundled":24},{"source":"osv","ecosystem":"Debian:5.0","package":"linux-2.6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.26-15lenny2"}]}],"versions":["2.6.26-13","2.6.26-13lenny2","2.6.26-13lenny2~bpo40+1","2.6.26-14","2.6.26-15","2.6.26-15lenny1","2.6.26-15~bpo40+1","2.6.26-15~bpo40+2"],"bundled":13},{"source":"osv","ecosystem":"Debian:5.0","package":"user-mode-linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.26-1um-2+15lenny2"}]}],"versions":["2.6.26-1um-2","2.6.26-1um-2+15"],"bundled":13}],"products":[{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"debian","product":"debian_linux"},{"vendor":"fedoraproject","product":"fedora"},{"vendor":"linux","product":"linux_kernel"},{"vendor":"opensuse","product":"opensuse"}],"references":[{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.29-git1.log","tags":["x_refsource_CONFIRM","x_transferred","Broken Link"]},{"url":"http://www.globalsecuritymag.com/Vigil-nce-Linux-kernel-denial-of%2C20090402%2C8311","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/49594","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://secunia.com/advisories/35226","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory"]},{"url":"http://patchwork.kernel.org/patch/15549/","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29.1","tags":["x_refsource_CONFIRM","x_transferred","Broken Link"]},{"url":"http://secunia.com/advisories/34478","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/34331","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=16175a796d061833aacfbd9672235f2d2725df65","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01126.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","Third Party Advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory"]},{"url":"http://secunia.com/advisories/35656","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory"]},{"url":"http://www.securityfocus.com/archive/1/503610/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-EFER-8585","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"http://secunia.com/advisories/35120","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory"]},{"url":"http://www.ubuntu.com/usn/usn-793-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory"]},{"url":"http://secunia.com/advisories/34981","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory"]},{"url":"http://www.debian.org/security/2009/dsa-1800","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory"]},{"url":"http://secunia.com/advisories/35387","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory"]},{"url":"http://www.debian.org/security/2009/dsa-1787","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory"]},{"url":"http://wiki.rpath.com/Advisories:rPSA-2009-0084","tags":["x_refsource_CONFIRM","x_transferred","Broken Link"]},{"url":"http://openwall.com/lists/oss-security/2009/04/01/3","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Patch","Third Party Advisory"]},{"url":"http://secunia.com/advisories/35121","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory"]},{"url":"http://www.vupen.com/english/advisories/2009/0924","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Broken Link"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=502109","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Third Party Advisory"]},{"url":"http://secunia.com/advisories/35394","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-1242"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=16175a796d061833aacfbd9672235f2d2725df65"},{"url":"http://www.globalsecuritymag.com/Vigil-nce-Linux-kernel-denial-of,20090402,8311"},{"url":"http://patchwork.kernel.org/patch/15549"},{"url":"https://github.com/advisories/GHSA-wqvc-c395-66j7"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2009-1242","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2009-1242","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.","status":"published","published":"2009-04-06T14:00:00Z","modified":"2024-08-07T05:04:49.295Z","updated_at":"2026-11-02T14:33:25.126493Z"}],"euvd":[{"id":"EUVD-2009-1241","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.","status":"published","published":"2009-04-06T14:00:00Z","modified":"2024-08-07T05:04:49Z","updated_at":"2026-11-03T01:39:22.412498Z"}],"ghsa":[{"id":"GHSA-wqvc-c395-66j7","title":"The vmx_set_msr function in arch/x86/kvm/vmx.c in the VMX implementation in the KVM subsystem in...","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.","status":"published","published":"2022-05-02T03:23:05Z","modified":"2025-04-09T04:08:46Z","cwes":["CWE-20"],"updated_at":"2026-11-02T15:01:00.026247Z"}],"nvd":[{"id":"CVE-2009-1242","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.","status":"published","published":"2009-04-06T14:30:00.39Z","modified":"2026-06-16T23:06:50.553Z","cvss":[{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:01:34.44527Z"}],"osv":[{"id":"BELL-CVE-2009-1242","title":"CVE-2009-1242 does not affect BellSoft software","status":"withdrawn","published":"2009-04-06T14:30:00Z","modified":"2026-01-28T07:22:07.538552Z","cvss":[{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium"}],"updated_at":"2026-11-02T15:28:12.886815Z"},{"id":"DSA-1787-1","title":"linux-2.6.24 - several vulnerabilities","status":"published","published":"2009-05-02T00:00:00Z","modified":"2026-03-09T01:23:16.188856Z","updated_at":"2026-11-02T15:46:14.734124Z"},{"id":"DSA-1800-1","title":"linux-2.6 user-mode-linux - several vulnerabilities","status":"published","published":"2009-05-15T00:00:00Z","modified":"2026-03-09T01:19:08.249263Z","updated_at":"2026-11-02T15:46:14.734124Z"}]}}