How severe is CVE-2014-3940?

CVE-2014-3940 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2014-3940 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-3940?

CVE-2014-3940 primarily affects Redhat Enterprise Linux. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-3940?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-3940 published?

CVE-2014-3940 was published on 2014-06-05 and last updated on 2026-06-17.

CVE-2014-3940

CVE-2014-3940 is a medium-severity vulnerability in Redhat Enterprise Linux with a CVSS 2.0 base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Redhat Enterprise Linux
Published: 2014-06-05
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2014-3940?: CVE-2014-3940 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2014-3940 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-3940?: CVE-2014-3940 primarily affects Redhat Enterprise Linux. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-3940?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-3940 published?: CVE-2014-3940 was published on 2014-06-05 and last updated on 2026-06-17.

References

Affected products (16)

cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14:rc8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.14.4:*:*:*:*:*:*:*

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