CVE-2016-9777
Kernel: kvm: out of bounds memory access via vcpu_id
Severity
ImportantRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · November 23, 2016
Updated · November 21, 2025
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.
Statement
This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 8CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 · 6.5AV:A/AC:H/Au:S/C:C/I:C/A:C
CWE-787 · Out-of-bounds Write