High severity7.8NVD Advisory· Published Dec 28, 2016· Updated Jun 17, 2026

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Linux/Kernel2 versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.8,<4.8.12
- (no CPE)range: <4.8.12

Patches

Vulnerability mechanics

References

git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/nvdPatchVendor Advisory
www.openwall.com/lists/oss-security/2016/12/02/2nvdMailing ListPatch
github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755nvdPatchVendor Advisory
www.securityfocus.com/bid/94640nvdThird Party AdvisoryVDB Entry
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12nvdRelease Notes
bugzilla.redhat.com/show_bug.cginvdIssue Tracking

News mentions

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