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Vulnerability Details : CVE-2014-3940

The Linux kernel through 3.14.5 does not properly consider the presence of hugetlb entries, which allows local users to cause a denial of service (memory corruption or system crash) by accessing certain memory locations, as demonstrated by triggering a race condition via numa_maps read operations during hugepage migration, related to fs/proc/task_mmu.c and mm/mempolicy.c.
Publish Date : 2014-06-05 Last Update Date : 2014-06-18
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- CVSS Scores & Vulnerability Types

CVSS Score
4.0
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 High (Specialized access conditions exist. It is hard to exploit and several special conditions must be satisfied to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceMemory corruption
CWE ID 362

- Products Affected By CVE-2014-3940

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 3.14 RC5 Version Details Vulnerabilities
2 OS Linux Linux Kernel 3.14 - Version Details Vulnerabilities
3 OS Linux Linux Kernel 3.14 RC6 Version Details Vulnerabilities
4 OS Linux Linux Kernel 3.14 RC1 Version Details Vulnerabilities
5 OS Linux Linux Kernel 3.14 RC7 Version Details Vulnerabilities
6 OS Linux Linux Kernel 3.14 RC2 Version Details Vulnerabilities
7 OS Linux Linux Kernel 3.14 RC8 Version Details Vulnerabilities
8 OS Linux Linux Kernel 3.14 RC3 Version Details Vulnerabilities
9 OS Linux Linux Kernel 3.14 RC4 Version Details Vulnerabilities
10 OS Linux Linux Kernel 3.14.1 Version Details Vulnerabilities
11 OS Linux Linux Kernel 3.14.2 Version Details Vulnerabilities
12 OS Linux Linux Kernel 3.14.3 Version Details Vulnerabilities
13 OS Linux Linux Kernel 3.14.4 Version Details Vulnerabilities
14 OS Linux Linux Kernel 3.14.5 Version Details Vulnerabilities
15 OS Redhat Enterprise Linux 6 Version Details Vulnerabilities
16 Application Redhat Enterprise Mrg 2.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 14
Redhat Enterprise Linux 1
Redhat Enterprise Mrg 1

- References For CVE-2014-3940

http://secunia.com/advisories/59011
SECUNIA 59011
http://www.securityfocus.com/bid/67786
BID 67786 Linux Kernel CVE-2014-3940 Unspecified Security Vulnerability Release Date:2014-07-23
http://www.openwall.com/lists/oss-security/2014/06/02/5
MLIST [oss-security] 20140602 CVE-2014-3940 - Linux kernel - missing check during hugepage migration
https://bugzilla.redhat.com/show_bug.cgi?id=1104097 CONFIRM
https://lkml.org/lkml/2014/3/18/784
MLIST [linux-kernel] 20140318 [PATCH RESEND -mm 1/2] mm: add !pte_present() check on existing hugetlb_entry callbacks

- Metasploit Modules Related To CVE-2014-3940

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


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