# CVE-2022-25636: Memory corruption in n/a

> Local attackers can exploit a heap out-of-bounds write in the Linux kernel's netfilter module to gain elevated privileges.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 22 Feb 2022
- **Updated:** 3 Aug 2024
- **Also known as:** DEBIAN-CVE-2022-25636, GHSA-44m9-c2jp-x4c5, UBUNTU-CVE-2022-25636

## What is CVE-2022-25636?

CVE-2022-25636 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 22 Feb 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

net/netfilter/nf_dup_netdev.c in the Linux kernel 5.4 through 5.6.10 allows local users to gain privileges because of a heap out-of-bounds write. This is related to nf_tables_offload.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2022-25636?

It affects 13 products.


Products: Debian Debian Linux, Linux kernel, Netapp H300e, Netapp H300s, Netapp H410c, Netapp H410s, Netapp H500e, Netapp H500s, Netapp H700e, Netapp H700s, Oracle Communications Cloud Native Core Binding Support Function, Oracle Communications Cloud Native Core Network Exposure Function, Oracle Communications Cloud Native Core Policy.

## How do I fix CVE-2022-25636?

Apply the vendor's patch.

## Is CVE-2022-25636 being exploited?

There is no known exploitation of CVE-2022-25636 in the wild and no public exploit code.

Public exploit code:

- CVE-2022-25636 (github_poc): https://github.com/Bonfee/CVE-2022-25636
- CVE-2022-25636 exploit rewritten with pipe primitive (github_poc): https://github.com/veritas501/CVE-2022-25636-PipeVersion
- CVE-2022-0185 analysis write up (github_poc): https://github.com/chenaotian/CVE-2022-25636

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-25636 and fix it if it is affected.

What it is: CVE-2022-25636 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 22 Feb 2022. 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-2022-25636 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2022-25636/ (Markdown: https://insights.sbomify.com/CVE-2022-25636/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-25636
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-25636
- OSV: https://osv.dev/vulnerability/CVE-2022-25636

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-25636/
Summaries are generated and may contain mistakes; the official description above is the record.