Known exploited vulnerability
CVE-2018-14634
The short answer
CVE-2018-14634 affects The Linux Foundation kernel and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-01-26: attackers are using it, so patch it first.
What it is
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.
Weakness: CWE-190.
Severity
7.8 high
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Jan 26, 2026
Federal due date Feb 16, 2026
EPSS, next 30 days
15%
Higher than 97% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says 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.
Affected products
kernel. NVD's record lists the exact affected versions.
References
- access.redhat.com/errata/RHSA-2018:2748 Third Party Advisory
- access.redhat.com/errata/RHSA-2018:2763 Third Party Advisory
- access.redhat.com/errata/RHSA-2018:2846 Third Party Advisory
- access.redhat.com/errata/RHSA-2018:2924 Third Party Advisory
- access.redhat.com/errata/RHSA-2018:2925 Third Party Advisory
- access.redhat.com/errata/RHSA-2018:2933 Third Party Advisory
- access.redhat.com/errata/RHSA-2018:3540 Third Party Advisory
- access.redhat.com/errata/RHSA-2018:3586 Third Party Advisory
- access.redhat.com/errata/RHSA-2018:3590 Third Party Advisory
- access.redhat.com/errata/RHSA-2018:3591 Third Party Advisory
- access.redhat.com/errata/RHSA-2018:3643 Third Party Advisory
- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14634 Issue TrackingThird Party Advisory
Questions
Is CVE-2018-14634 being exploited?
Yes. CISA added CVE-2018-14634 to its Known Exploited Vulnerabilities catalog on 2026-01-26, with a federal remediation due date of 2026-02-16.
How do I fix CVE-2018-14634?
CISA's 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.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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