{"id":"CVE-2014-8481","aliases":["BELL-CVE-2014-8481","EUVD-2014-8318","GHSA-2m72-x5wj-734p","UBUNTU-CVE-2014-8481"],"status":"published","title":"The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before...","description":"The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.","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":"2026-11-08","score":0.00578,"percentile":0.47844,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399"],"published":"2014-11-10T11:00:00Z","modified":"2026-06-17T00:16:47Z","products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1156615","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://github.com/torvalds/linux/commit/a430c9166312e1aa3d80bce32374233bdbfeba32","tags":["x_refsource_CONFIRM","x_transferred","Exploit"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a430c9166312e1aa3d80bce32374233bdbfeba32","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://secunia.com/advisories/62042","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2014/10/23/7","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit"]},{"url":"http://thread.gmane.org/gmane.comp.emulators.kvm.devel/128427","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2014-8481"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a430c9166312e1aa3d80bce32374233bdbfeba32"},{"url":"https://github.com/advisories/GHSA-2m72-x5wj-734p"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2014-8481","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2014-8481","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2014-8481","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2014-8481","description":"The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.","status":"published","published":"2014-11-10T11:00:00Z","modified":"2024-08-06T13:18:48.317Z","updated_at":"2026-11-02T14:33:43.206348Z"}],"euvd":[{"id":"EUVD-2014-8318","description":"The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.","status":"published","published":"2014-11-10T11:00:00Z","modified":"2024-08-06T13:18:48Z","updated_at":"2026-11-03T01:56:52.024026Z"}],"ghsa":[{"id":"GHSA-2m72-x5wj-734p","title":"The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before...","description":"The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.","status":"published","published":"2022-05-17T04:01:50Z","modified":"2025-04-12T12:42:46Z","updated_at":"2026-11-02T15:01:19.407948Z"}],"nvd":[{"id":"CVE-2014-8481","description":"The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.","status":"published","published":"2014-11-10T11:55:09.767Z","modified":"2026-06-17T00:16:47.28Z","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-399"],"updated_at":"2026-11-02T14:02:57.304171Z"}],"osv":[{"id":"BELL-CVE-2014-8481","title":"CVE-2014-8481 does not affect BellSoft software","status":"withdrawn","published":"2014-11-10T11:55:00Z","modified":"2026-01-28T07:21:28.816555Z","cvss":[{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium"}],"updated_at":"2026-11-02T15:28:13.47097Z"},{"id":"UBUNTU-CVE-2014-8481","description":"The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.","status":"withdrawn","published":"2014-11-10T11:55:00Z","modified":"2025-07-16T08:11:12.289408Z","updated_at":"2026-11-02T15:54:09.378953Z"}]}}