National Vulnerability Database

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    Vulnerabilities Detail

CVE-2014-8173 Detail

Description

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.

Source:  MITRE
Description Last Modified:  03/16/2015

Evaluator Description

CWE-476: NULL Pointer Dereference

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9

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

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ee53664bda169f519ce3c6a22d378f0b946c8178
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
http://rhn.redhat.com/errata/RHSA-2015-0290.html
http://rhn.redhat.com/errata/RHSA-2015-0694.html
https://bugzilla.redhat.com/show_bug.cgi?id=1198457
https://github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c8178

Technical Details

Vulnerability Type (View All)

Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2014-8173
NVD Published Date:
03/16/2015
NVD Last Modified:
01/02/2017