What is CVE-2018-14634?

CVE-2018-14634 is a high-severity vulnerability in The Linux Foundation Kernel, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2018-09-25.

How severe is CVE-2018-14634?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2018-14634 known to be exploited?

Yes. CVE-2018-14634 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-01-26), indicating it is being actively exploited. 23 public proof-of-concept repositories are indexed.

Integer overflow in The Linux Foundation Kernel

CVE-2018-14634

An integer overflow flaw was found in the Linux kernel's create_elf_tables() function. An unprivileged local user with access to SUID (or otherwise privileged) binary could use this flaw to escalate their privileges on the system. Kernel v…

Vulnerability class: Integer Overflow

EPSS: 0.206 (95.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

The Linux Foundation Kernel — versions 2.6.x, 3.10.x, 4.14.x

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2026-01-26. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2026-02-16.

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public proof-of-concept exploits

References

RHSA-2018:3540 (x_refsource_REDHAT, vendor-advisory)
security.netapp.com/advisory/ntap-20190204-0002/ (x_refsource_CONFIRM)
RHSA-2018:2925 (x_refsource_REDHAT, vendor-advisory)
RHSA-2018:3591 (x_refsource_REDHAT, vendor-advisory)
45516 (exploit, x_refsource_EXPLOIT-DB)
USN-3775-1 (x_refsource_UBUNTU, vendor-advisory)
RHSA-2018:2933 (x_refsource_REDHAT, vendor-advisory)
USN-3779-1 (x_refsource_UBUNTU, vendor-advisory)
RHSA-2018:2748 (x_refsource_REDHAT, vendor-advisory)
RHSA-2018:3590 (x_refsource_REDHAT, vendor-advisory)

Frequently asked questions

What is CVE-2018-14634?: CVE-2018-14634 is a high-severity vulnerability in The Linux Foundation Kernel, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2018-09-25.
How severe is CVE-2018-14634?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2018-14634 known to be exploited?: Yes. CVE-2018-14634 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-01-26), indicating it is being actively exploited. 23 public proof-of-concept repositories are indexed.