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CVE-2018-14634

Linux Kernel Integer Overflow Vulnerability

  • High 7.8
  • Exploited: added to CISA KEV 26 Jan 2026
  • A public exploit reference is listed

Description

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 versions 2.6.x, 3.10.x and 4.14.x are believed to be vulnerable.

Key facts

Published
25 Sep 2018
Last changed
27 Jan 2026
Assigned by
redhat
KEV added
26 Jan 2026
KEV fix due
16 Feb 2026
EPSS
14.689% likely to be exploited in the next 30 days, higher than 96.722% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 7.8CVSS 3.0, Highfrom the CNA (redhat)CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What to do

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

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
The Linux Foundationkernel
  • 2.6.x, 3.10.x, 4.14.x (affected)

Timeline

  1. 25 Sep 2018 Published
  2. 26 Jan 2026 Added to the CISA KEV catalogue

Weakness

References