# CVE-2022-42432: Information disclosure in Kernel

> Local attackers with high privileges can disclose sensitive kernel memory via uninitialized memory in nft_osf_eval, potentially aiding code execution.

- **Severity:** Medium 5.1 (`CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 29 Mar 2023
- **Updated:** 14 Oct 2026
- **Also known as:** DEBIAN-CVE-2022-42432, GHSA-6fx6-mv6x-h475, UBUNTU-CVE-2022-42432

## What is CVE-2022-42432?

CVE-2022-42432 is a medium-severity vulnerability in Linux kernel, published on 29 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

This vulnerability allows local attackers to disclose sensitive information on affected installations of the Linux Kernel 6.0-rc2. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the nft_osf_eval function. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel. Was ZDI-CAN-18540.

Weakness: CWE-457 (Use of Uninitialized Variable)

## Which versions are affected by CVE-2022-42432?

It affects 1 product.


Products: Linux kernel.

## How do I fix CVE-2022-42432?

Apply the vendor's patch.

## Is CVE-2022-42432 being exploited?

There is no known exploitation of CVE-2022-42432 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-42432 and fix it if it is affected.

What it is: CVE-2022-42432 is a medium-severity vulnerability in Linux kernel, published on 29 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-42432 in the wild and no public exploit code.

Affected product: Linux kernel. 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-2022-42432/ (Markdown: https://insights.sbomify.com/CVE-2022-42432/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-42432
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-42432
- OSV: https://osv.dev/vulnerability/CVE-2022-42432

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-42432/
Summaries are generated and may contain mistakes; the official description above is the record.