National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2017-12168 Detail

Current Description

The access_pmu_evcntr function in arch/arm64/kvm/sys_regs.c in the Linux kernel before 4.8.11 allows privileged KVM guest OS users to cause a denial of service (assertion failure and host OS crash) by accessing the Performance Monitors Cycle Count Register (PMCCNTR).

Source:  MITRE
Description Last Modified:  09/20/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.0 MEDIUM
Vector: AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H (V3 legend)
Impact Score: 4.0
Exploitability Score: 1.5

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 4.9 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9e3f7a29694049edd728e2400ab57ad7553e5aa9 Issue Tracking Patch Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.11 Release Notes Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1492984 Issue Tracking Patch Third Party Advisory
https://github.com/torvalds/linux/commit/9e3f7a29694049edd728e2400ab57ad7553e5aa9 Issue Tracking Patch Third Party Advisory

Technical Details

Vulnerability Type (View All)

Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-12168
NVD Published Date:
09/20/2017
NVD Last Modified:
09/22/2017