SB2014111008 - Permissions, Privileges, and Access Controls in Linux kernel

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Main Vulnerability Database SB2014111008

SB2014111008 - Permissions, Privileges, and Access Controls in Linux kernel

Published: November 10, 2014 Updated: August 10, 2020

Security Bulletin ID SB2014111008
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2014-3610)

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The WRMSR processing functionality in the KVM subsystem in the Linux kernel through 3.17.2 does not properly handle the writing of a non-canonical address to a model-specific register, which allows guest OS users to cause a denial of service (host OS crash) by leveraging guest OS privileges, related to the wrmsr_interception function in arch/x86/kvm/svm.c and the handle_wrmsr function in arch/x86/kvm/vmx.c.


Remediation

Install update from vendor's website.

References