CVE-2016-9777

 

Published at: - 28-12-2016 08:59

Last modified: - 26-10-2022 01:44

Total changes: - 3

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
• https://bugzilla.redhat.com/show_bug.cgi?id=1400804
• [oss-security] 20161202 CVE request: Kernel: kvm: out of bounds memory access via vcpu_id-Mailing List, Patch
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
• 94640-

 

Keywords

NVD

 

CVE-2016-9777

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures