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Vulnerability Details : CVE-2014-4171

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.
Publish Date : 2014-06-23 Last Update Date : 2018-12-18
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- CVSS Scores & Vulnerability Types

CVSS Score
4.7
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID CWE id is not defined for this vulnerability

- Related OVAL Definitions

Title Definition Id Class Family
ELSA-2014-3096 -- Unbreakable Enterprise kernel security update (important) oval:org.mitre.oval:def:28373 unix
RHSA-2015:0102: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20150102 unix
SUSE-SU-2014:1319-1 -- Security update for Linux kernel (important) oval:org.mitre.oval:def:28126 unix
SUSE-SU-2014:1316-1 -- Security update for Linux kernel (important) oval:org.mitre.oval:def:27719 unix
USN-2334-1 -- linux vulnerabilities oval:org.mitre.oval:def:26732 unix
USN-2335-1 -- linux-ti-omap4 vulnerabilities oval:org.mitre.oval:def:26346 unix
USN-2336-1 -- linux-lts-trusty vulnerabilities oval:org.mitre.oval:def:26633 unix
USN-2337-1 -- linux vulnerabilities oval:org.mitre.oval:def:26591 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2014-4171

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 ~~lts~~~ Version Details Vulnerabilities
2 OS Linux Linux Kernel 3.15.1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 1
Linux Linux Kernel 1

- References For CVE-2014-4171

http://www.ubuntu.com/usn/USN-2335-1
UBUNTU USN-2335-1
https://bugzilla.redhat.com/show_bug.cgi?id=1111180 CONFIRM
http://www.ubuntu.com/usn/USN-2334-1
UBUNTU USN-2334-1
http://www.securitytracker.com/id/1030450
SECTRACK 1030450
http://www.openwall.com/lists/oss-security/2014/06/18/11
MLIST [oss-security] 20140618 CVE-2014-4171 - Linux kernel mm/shmem.c denial of service
http://ozlabs.org/~akpm/mmots/broken-out/shmem-fix-faulting-into-a-hole-while-its-punched.patch CONFIRM
http://www.securityfocus.com/bid/68157
BID 68157 Linux Kernel 'shmem.c' CVE-2014-4171 Local Denial of Service Vulnerability Release Date:2015-02-04
http://rhn.redhat.com/errata/RHSA-2015-0102.html
REDHAT RHSA-2015:0102
http://rhn.redhat.com/errata/RHSA-2014-1318.html
REDHAT RHSA-2014:1318
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html
SUSE SUSE-SU-2014:1316
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html
SUSE SUSE-SU-2014:1319
http://marc.info/?l=linux-mm-commits&m=140303745420549&w=2
MLIST [mm-commits] 20140617 + shmem-fix-faulting-into-a-hole-while-its-punched.patch added to -mm tree

- Metasploit Modules Related To CVE-2014-4171

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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