CVE-2018-14634 Linux Kernel Integer Overflow
Exploited in the wild
High 7.8
Published
Updated
Check this codebase for CVE-2018-14634 and fix it if it is affected.
What it is: CVE-2018-14634 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 25 Sep 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2018-14634 in the wild since at least 26 Jan 2026.
Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2018-14634/ (Markdown: https://insights.sbomify.com/CVE-2018-14634/index.md)
An integer overflow in the Linux kernel allows local users to escalate privileges via SUID binaries.
- Exploited in the wild
- Since 26 Jan 2026
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-14634?
CVE-2018-14634 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 25 Sep 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-190
Which versions are affected by CVE-2018-14634?
It affects 28 products.
Linux distribution packages (40)
kernel Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-abi-whitelists Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debug Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debug-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debug-devel Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debuginfo-common-x86_64 Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-devel Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-doc Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-headers Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-tools Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-tools-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-tools-libs Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel-tools-libs-devel Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
perf Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
perf-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
python-perf Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
python-perf-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:3.10.0-862.14.4.el7 |
kernel Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-abi-whitelists Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debug Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debug-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debug-devel Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debuginfo-common-x86_64 Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-devel Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-doc Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-headers Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-tools Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-tools-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-tools-libs Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel-tools-libs-devel Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
perf Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
perf-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
python-perf Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
python-perf-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:3.10.0-862.14.4.el7 |
kernel Red Hat:enterprise_linux:7::server | All versions | 0:3.10.0-862.14.4.el7 |
kernel-abi-whitelists Red Hat:enterprise_linux:7::server | All versions | 0:3.10.0-862.14.4.el7 |
kernel-bootwrapper Red Hat:enterprise_linux:7::server | All versions | 0:3.10.0-862.14.4.el7 |
kernel-debug Red Hat:enterprise_linux:7::server | All versions | 0:3.10.0-862.14.4.el7 |
Products include Canonical Ubuntu Linux, F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager and 22 more.
How do I fix CVE-2018-14634?
Apply the vendor's patch. US federal agencies must fix it by 16 Feb 2026.
Is CVE-2018-14634 being exploited?
Yes. Attackers have exploited CVE-2018-14634 in the wild since at least 26 Jan 2026.
Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as CVE-2019-9457, DEBIAN-CVE-2018-14634, GHSA-4994-8w6g-9jvw, RHSA-2018:2748, RHSA-2018:2763, RHSA-2018:3643 and 1 more.