NVD - CVE-2014-4171

CVE-2014-4171 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

mm/shmem.c in the Linux kernel through 3.15.1 does not properly implement the interaction between range notification and hole punching, which allows local users to cause a denial of service (i_mutex hold) by using the mmap system call to access a hole, as demonstrated by interfering with intended shmem activity by blocking completion of (1) an MADV_REMOVE madvise call or (2) an FALLOC_FL_PUNCH_HOLE fallocate call.

Source: MITRE
Description Last Modified: 06/23/2014

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 4.7 MEDIUM
Vector: (AV:L/AC:M/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 3.4

Access Vector (AV): Local
Access Complexity (AC): Medium
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://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html
http://marc.info/?l=linux-mm-commits&m=140303745420549&w=2
http://ozlabs.org/~akpm/mmots/broken-out/shmem-fix-faulting-into-a-hole-while-its-punched.patch
http://rhn.redhat.com/errata/RHSA-2014-1318.html
http://rhn.redhat.com/errata/RHSA-2015-0102.html
http://www.openwall.com/lists/oss-security/2014/06/18/11
http://www.securityfocus.com/bid/68157
http://www.securitytracker.com/id/1030450
http://www.ubuntu.com/usn/USN-2334-1
http://www.ubuntu.com/usn/USN-2335-1
https://bugzilla.redhat.com/show_bug.cgi?id=1111180	Vendor Advisory

Technical Details

Vulnerability Type (View All)

Other (NVD-CWE-Other)

Vulnerable software and versions Switch to CPE 2.2

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Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2014-4171
NVD Published Date:
06/23/2014
NVD Last Modified:
01/06/2017

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2014-4171 Detail

Description

Impact

References to Advisories, Solutions, and Tools

Technical Details

Vulnerable software and versions Switch to CPE 2.2

Change History

CVE Modified by MITRE - 1/6/2017 10:00:11 PM

CVE Modified by Source - 3/18/2015 9:59:13 PM

CVE Modified by Source - 12/6/2014 9:59:50 PM

Initial CVE Analysis - 6/23/2014 7:22:06 AM

Quick Info