High severity7.8NVD Advisory· Published Jun 27, 2016· Updated Jun 17, 2026

CVE-2016-4440

Description

arch/x86/kvm/vmx.c in the Linux kernel through 4.6.3 mishandles the APICv on/off state, which allows guest OS users to obtain direct APIC MSR access on the host OS, and consequently cause a denial of service (host OS crash) or possibly execute arbitrary code on the host OS, via x2APIC mode.

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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: >=4.5,<4.7
- (no CPE)range: <=4.6.3

Patches

Vulnerability mechanics

References

git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/nvdVendor Advisory
github.com/torvalds/linux/commit/3ce424e45411cf5a13105e0386b6ecf6eeb4f66fnvdVendor Advisory
www.openwall.com/lists/oss-security/2016/05/20/2nvdMailing List
bugzilla.redhat.com/show_bug.cginvdIssue Tracking

News mentions

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