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Overview

Vulnerability Score 7.2 7.2
CVE Id CVE-2014-8173
Last Modified 23 Mar 2015 10:00:33
Published 16 Mar 2015 06:59:03
Confidentiality Impact COMPLETE COMPLETE
Integrity Impact COMPLETE COMPLETE
Availability Impact COMPLETE COMPLETE
Access Vector LOCAL
Access Complexity LOW
Authentication NONE

CVE-2014-8173

Summary

The pmd_none_or_trans_huge_or_clear_bad function in include/asm-generic/pgtable.h in the Linux kernel before 3.13 on NUMA systems does not properly determine whether a Page Middle Directory (PMD) entry is a transparent huge-table entry, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted MADV_WILLNEED madvise system call that leverages the absence of a page-table lock.

Vulnerable Systems

Operating System

  • Linux Kernel 3.12.9


References

CONFIRM - https://github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c8178

CONFIRM - https://bugzilla.redhat.com/show_bug.cgi?id=1198457

CONFIRM - http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ee53664bda169f519ce3c6a22d378f0b946c8178

REDHAT - RHSA-2015:0290

REDHAT - RHSA-2015:0694


Last Updated: 27 May 2016 11:08:05