# CVE-2022-31291: Use after free in n/a

> Attackers can trigger a double free in the DLT daemon via crafted TCP packets, potentially causing denial of service or code execution.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 Jun 2022
- **Updated:** 3 Aug 2024
- **Also known as:** DEBIAN-CVE-2022-31291, GHSA-5569-pg4r-25pv, UBUNTU-CVE-2022-31291

## What is CVE-2022-31291?

CVE-2022-31291 is a high-severity use after free vulnerability in Debian Debian Linux, published on 16 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue in dlt_config_file_parser.c of dlt-daemon v2.18.8 allows attackers to cause a double free via crafted TCP packets.

Weakness: CWE-415 (Double Free)

## Which versions are affected by CVE-2022-31291?

It affects 2 products.


Products: Debian Debian Linux, Genivi Diagnostic Log and Trace.

## How do I fix CVE-2022-31291?

Apply the vendor's patch.

## Is CVE-2022-31291 being exploited?

There is no known exploitation of CVE-2022-31291 in the wild and no public exploit code.

## 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-2022-31291 and fix it if it is affected.

What it is: CVE-2022-31291 is a high-severity use after free vulnerability in Debian Debian Linux, published on 16 Jun 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-2022-31291 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-2022-31291/ (Markdown: https://insights.sbomify.com/CVE-2022-31291/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-31291
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-31291
- OSV: https://osv.dev/vulnerability/CVE-2022-31291

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-31291/
Summaries are generated and may contain mistakes; the official description above is the record.