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.
References (6)
Core 6
Core References
Release Notes x_refsource_confirm
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1400804
Patch, Vendor Advisory x_refsource_confirm
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/94640
Patch, Vendor Advisory x_refsource_confirm
https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
Mailing List, Patch mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/12/02/2
Scores
CVSS v3
7.8
EPSS
0.0007
EPSS Percentile
20.6%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Details
CWE
CWE-125
Status
published
Products (1)
linux/linux_kernel
4.8 - 4.8.12
Published
Dec 28, 2016
Tracked Since
Feb 18, 2026