CVE-2017-2596

MEDIUM

Description

The nested_vmx_check_vmptr function in arch/x86/kvm/vmx.c in the Linux kernel through 4.9.8 improperly emulates the VMXON instruction, which allows KVM L1 guest OS users to cause a denial of service (host OS memory consumption) by leveraging the mishandling of page references.

References

http://www.debian.org/security/2017/dsa-3791

http://www.openwall.com/lists/oss-security/2017/01/31/4

http://www.securityfocus.com/bid/95878

https://access.redhat.com/errata/RHSA-2017:1842

https://access.redhat.com/errata/RHSA-2017:2077

https://bugzilla.redhat.com/show_bug.cgi?id=1417812

Details

Source: MITRE

Published: 2017-02-06

Updated: 2018-01-05

Type: CWE-399

Risk Information

CVSS v2.0

Base Score: 4.9

Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C)

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 6.5

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

Impact Score: 4

Exploitability Score: 2

Severity: MEDIUM