CVEs / CVE-2018-14634

CVE-2018-14634: Linux Kernel Integer Overflow Vulnerability

Known exploited in the CISA KEV catalog since 26 Jan 2026
high 7.8 CVSS 3.0 (NVD)
EPSS 14.6% chance of exploitation in the next 30 days, higher than 96% of CVEs (30 Oct 2026)
Last changed at its sources 17 Jun 2026

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Summary

Linux Kernel contains an integer overflow vulnerability in the create_elf_tables() function which could allow an unprivileged local user with access to SUID (or otherwise privileged) binary to escalate their privileges on the system.
CISA, Known Exploited Vulnerabilities catalog

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.
The CVE record, via NVD · published 25 Sep 2018 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
The Linux Foundation kernel	2.6.x, 3.10.x, 4.14.x	—

Exploitation

In CISA KEV since	26 Jan 2026
Due date for US federal agencies	16 Feb 2026
Used in ransomware campaigns	Unknown
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.

Severity

CVSS 3.0	7.8 high `CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H` Scored by NVD
Weakness	CWE-190

References

CVE-2018-14634 on NVD
CVE-2018-14634 in the CISA KEV catalog
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/about/ (cited by CISA)
https://www.kernel.org/ (cited by CISA)
https://www.cve.org/CVERecord?id=CVE-2018-14634 (cited by CISA)
https://access.redhat.com/errata/RHSA-2018:3540 (cited by CISA)
CVE-2018-14634 on OSV
http://www.openwall.com/lists/oss-security/2021/07/20/2 Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/105407 Broken Link, Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:2748 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2763 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2846 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2924 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2925 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2933 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3540 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3586 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3590 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3591 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3643 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14634 Issue Tracking, Third Party Advisory
https://security.netapp.com/advisory/ntap-20190204-0002/ Patch, Third Party Advisory
https://security.paloaltonetworks.com/CVE-2018-14634 Third Party Advisory
https://support.f5.com/csp/article/K20934447?utm_source=f5support&amp%3Butm_medium=RSS Third Party Advisory
https://usn.ubuntu.com/3775-1/ Third Party Advisory
https://usn.ubuntu.com/3775-2/ Third Party Advisory
https://usn.ubuntu.com/3779-1/ Third Party Advisory

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.