# CVE-2022-30767: Memory corruption in n/a

> A buffer overflow in the U-Boot NFS client allows attackers to execute arbitrary code or cause denial of service via crafted network responses.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 16 May 2022
- **Updated:** 3 Nov 2025
- **Also known as:** DEBIAN-CVE-2022-30767, GHSA-27g3-5ffj-8mw8, OESA-2022-1978, ROOT-OS-ALPINE-316-CVE-2022-30767, UBUNTU-CVE-2022-30767

## What is CVE-2022-30767?

CVE-2022-30767 is a critical memory corruption vulnerability in Fedoraproject Fedora, published on 16 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2022-30767?

It affects 2 products.


Products: Denx U-Boot, Fedoraproject Fedora.

## How do I fix CVE-2022-30767?

Apply the vendor's patch.

## Is CVE-2022-30767 being exploited?

There is no known exploitation of CVE-2022-30767 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2022-34835](https://insights.sbomify.com/CVE-2022-34835/): Integer overflow in n/a (critical 9.8)
- [CVE-2020-8432](https://insights.sbomify.com/CVE-2020-8432/): Use after free in n/a (critical 9.8)
- [CVE-2019-14192](https://insights.sbomify.com/CVE-2019-14192/): Integer overflow in n/a (critical 9.8)
- [CVE-2019-14193](https://insights.sbomify.com/CVE-2019-14193/): Memory corruption in n/a (critical 9.8)
- [CVE-2019-14194](https://insights.sbomify.com/CVE-2019-14194/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-30767 and fix it if it is affected.

What it is: CVE-2022-30767 is a critical memory corruption vulnerability in Fedoraproject Fedora, published on 16 May 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-30767 in the wild and no public exploit code.

Affected product: Fedoraproject Fedora. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2022-30767/ (Markdown: https://insights.sbomify.com/CVE-2022-30767/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-30767
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-30767
- OSV: https://osv.dev/vulnerability/CVE-2022-30767

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-30767/
Summaries are generated and may contain mistakes; the official description above is the record.