CVE-2016-9777

HighCVSS 7.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755Patch, Vendor Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12Release Notes
http://www.openwall.com/lists/oss-security/2016/12/02/2Mailing List, Patch
http://www.securityfocus.com/bid/94640Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1400804Issue Tracking
https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755Patch, Vendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755Patch, Vendor Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12Release Notes
http://www.openwall.com/lists/oss-security/2016/12/02/2Mailing List, Patch
http://www.securityfocus.com/bid/94640Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1400804Issue Tracking
https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755Patch, Vendor Advisory

Timeline

Published: Dec 28, 2016
Last modified: Jun 17, 2026
NVD status: Modified

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