{"id":"CVE-2016-9777","aliases":["DEBIAN-CVE-2016-9777","EUVD-2016-10578","GHSA-2x32-fffh-53mr","UBUNTU-CVE-2016-9777"],"status":"published","title":"KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the...","description":"KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0038,"percentile":0.32277,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2016-12-28T00:00:00Z","modified":"2026-09-22T07:02:42Z","fixes":[{"ecosystem":"Debian:12","package":"linux","fixed_in":["4.8.15-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"linux","fixed_in":["4.8.15-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"linux","fixed_in":["4.8.15-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"linux-hwe","fixed_in":["4.8.0-39.42~16.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.15-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.15-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.15-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"linux-hwe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.8.0-39.42~16.04.1"}]}],"versions":["4.8.0-36.36~16.04.1"]}],"products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1400804","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","report"]},{"url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","fix"]},{"url":"http://www.securityfocus.com/bid/94640","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","fix"]},{"url":"http://www.openwall.com/lists/oss-security/2016/12/02/2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Patch","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-9777"},{"url":"https://github.com/advisories/GHSA-2x32-fffh-53mr"},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-9777","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2016-9777","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-3190-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/notices/USN-3190-2","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-9777","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2016-9777","description":"KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.","status":"published","published":"2016-12-28T07:42:00Z","modified":"2024-08-06T02:59:03.471Z","updated_at":"2026-11-02T14:33:32.103757Z"}],"euvd":[{"id":"EUVD-2016-10578","description":"KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.","status":"published","published":"2016-12-28T07:42:00Z","modified":"2024-08-06T02:59:03Z","updated_at":"2026-11-03T02:22:26.376959Z"}],"ghsa":[{"id":"GHSA-2x32-fffh-53mr","title":"KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the...","description":"KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.","status":"published","published":"2022-05-17T03:11:46Z","modified":"2023-01-27T05:06:53Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:43:00.840976Z"}],"nvd":[{"id":"CVE-2016-9777","description":"KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.","status":"published","published":"2016-12-28T07:59:00.51Z","modified":"2026-06-17T00:56:32.657Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:03:33.686843Z"}],"osv":[{"id":"CVE-2016-9777","description":"KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.","status":"published","published":"2016-12-28T07:59:00.51Z","modified":"2026-03-15T22:12:38.505035Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:03.472693Z"},{"id":"DEBIAN-CVE-2016-9777","description":"KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.","status":"published","published":"2016-12-28T07:59:00.51Z","modified":"2026-09-22T07:02:42.860699179Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:28.207321Z"},{"id":"UBUNTU-CVE-2016-9777","description":"KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.","status":"published","published":"2016-12-28T00:00:00Z","modified":"2026-02-04T04:10:57.521798Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"},{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:13.356796Z"}]}}