CISA KEV · Known exploitedHigh

CVE-2018-14634

Linux Kernel

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.

CVSS
7.8
EPSS
14.7%
96.3% percentile
CISA KEV
Listed
Published
2018.09.26
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability14.7%
Technical severityCVSS 7.8

Vulnerability overview

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.

Affected product and versions

Product
Linux Kernel
Affected versions
2.6.x, 3.10.x, 4.14.x, >= 7.1.0 < 7.1.23, >= 8.0.0 < 8.0.16, >= 8.1.0 < 8.1.7, >= 11.2.1 < 11.6.4, >= 12.1.0 < 12.1.5, >= 13.0.0 < 13.1.1.5, >= 14.0.0 < 14.0.1.1, >= 14.1.0 < 14.1.0.6, >= 5.0.0 <= 5.4.0, >= 6.0.0 <= 6.0.1, >= 7.0.0 <= 7.1.0, 4.6.0, 1.0.0, 3.1.1, >= 2.2.0 <= 2.3.0, >= 5.0.0 <= 5.1.0, 4.4.0, >= 2.6.0 <= 2.6.39.4, >= 3.10 <= 3.10.102
Fixed versions
7.1.23, 8.0.16, 8.1.7, 11.6.4, 12.1.5, 13.1.1.5, 14.0.1.1, 14.1.0.6

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA 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.

Due date: 2026.02.16
  1. 1
    Identify

    Confirm that Linux Kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-190
KEV added
2026.01.26
Ransomware use
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