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Vulnerability Details : CVE-2014-8086

Race condition in the ext4_file_write_iter function in fs/ext4/file.c in the Linux kernel through 3.17 allows local users to cause a denial of service (file unavailability) via a combination of a write action and an F_SETFL fcntl operation for the O_DIRECT flag.
Publish Date : 2014-10-13 Last Update Date : 2020-08-14
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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 362

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2015:0290: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20150290 unix
USN-2447-1 -- Linux kernel (Utopic HWE) vulnerabilities oval:org.mitre.oval:def:28556 unix
USN-2447-2 -- Linux kernel (Utopic HWE) regression oval:org.mitre.oval:def:27960 unix
USN-2448-1 -- Linux kernel vulnerabilities oval:org.mitre.oval:def:28611 unix
USN-2448-2 -- Linux kernel regression oval:org.mitre.oval:def:28608 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-2014-8086

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
2 OS Suse Suse Linux Enterprise Server 11 SP2 * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1
Suse Suse Linux Enterprise Server 1

- References For CVE-2014-8086

http://www.openwall.com/lists/oss-security/2014/10/09/25
MLIST [oss-security] 20141009 CVE-2014-8086 - Linux kernel ext4 race condition
https://exchange.xforce.ibmcloud.com/vulnerabilities/96922
XF linux-kernel-cve20148086-dos(96922)
http://rhn.redhat.com/errata/RHSA-2015-0694.html
REDHAT RHSA-2015:0694
http://rhn.redhat.com/errata/RHSA-2015-0290.html
REDHAT RHSA-2015:0290
http://www.securityfocus.com/bid/70376
BID 70376 Linux Kernel 'ext4/file.c' Local Denial of Service Vulnerability Release Date:2014-12-24
http://www.spinics.net/lists/linux-ext4/msg45683.html
MLIST [linux-ext4] 20141009 [PATCH] ext4: fix race between write and fcntl(F_SETFL)
https://lkml.org/lkml/2014/10/8/545
MLIST [linux-kernel] 20141008 ext4: kernel BUG at fs/ext4/inode.c:2959!
http://www.spinics.net/lists/linux-ext4/msg45685.html
MLIST [linux-ext4] 20141009 [PATCH] add aio/dio regression test race between write and fcntl
https://bugzilla.redhat.com/show_bug.cgi?id=1151353 CONFIRM
https://lkml.org/lkml/2014/10/9/129
MLIST [linux-kernel] 20141009 Re: ext4: kernel BUG at fs/ext4/inode.c:2959!
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html
SUSE SUSE-SU-2015:1478

- Metasploit Modules Related To CVE-2014-8086

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


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