CVE-2014-3940

What it is

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.

At a glance

Exploitability

Can be exploited locally on the machine without logging in. High risk of service disruption.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2014-06-05 17:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:09 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.3% in the next 30 days (EPSS).
• Severity: 4.0 MEDIUM (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2014-06-05 17:55 UTC

Last modified

2026-06-17 00:09 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-362 · Race condition

Record status

Modified

Affected

• Redhat Enterprise Linux 6.0
• Redhat Enterprise Mrg 2.0
• Linux Kernel ≤ 3.14.5
• Linux Kernel 3.14
• Linux Kernel 3.14.1
• Linux Kernel 3.14.2
• Linux Kernel 3.14.3
• Linux Kernel 3.14.4

Attack profile CVSS 2.0 · 4.0

Attack vector

Local

Complexity

High

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2014-3940.md and follow it. Check whether this project is affected by CVE-2014-3940. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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