What is CVE-2014-3940?

CVE-2014-3940 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.0 out of 10, classified as a Race Condition flaw (CWE-362). CVE-2014-3940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2014-3940?

CVE-2014-3940 has a CVSS score of 4.0 out of 10, rated Medium severity. The vector string is AV:L/AC:H/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2014-3940?

No patch is currently available for CVE-2014-3940. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2014-3940 actively exploited?

CVE-2014-3940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/362.html

CVE-2014-3940

Medium

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.

Package Linux Kernel

Published 2014-06-05

Last modified 2026-05-06

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.0

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

User Interaction

Scope

Confidentiality

High

Integrity

None

Availability

Vector string

AV:L/AC:H/Au:N/C:N/I:N/A:C

Weakness type

CWE-362

CVE-2014-3940 is a Race Condition vulnerability

What is Race Condition?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2014-3940 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Red Hat
http://rhn.redhat.com/errata/RHSA-2015-0290.html
Red Hat
http://rhn.redhat.com/errata/RHSA-2015-1272.html
Secunia
http://secunia.com/advisories/59011
Secunia
http://secunia.com/advisories/61310
Openwall
http://www.openwall.com/lists/oss-security/2014/06/02/5
Securityfocus
http://www.securityfocus.com/bid/67786
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1104097
Lkml
https://lkml.org/lkml/2014/3/18/784
Support
https://support.f5.com/kb/en-us/solutions/public/15000/600/sol15685.html

Details

CVE ID CVE-2014-3940

Severity Medium

CVSS score 4.0 / 10

CVSS version 2.0

Published 2014-06-05

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2014-3940?

CVE-2014-3940 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.0 out of 10 , classified as a Race Condition flaw (CWE-362) . CVE-2014-3940 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2014-3940?

CVE-2014-3940 has a CVSS score of 4.0 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:H/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2014-3940?

No patch is currently available for CVE-2014-3940. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2014-3940 actively exploited?

No — CVE-2014-3940 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Race Condition (CWE-362)?

The product contains a code sequence that can run concurrently with other code, creating unexpected states. View CWE-362 on MITRE CWE →