# CVE-2022-3637: Linux Kernel BlueZ jlink.c jlink_init denial of service

> A flaw in the BlueZ jlink_init function allows attackers to cause a denial of service in the Linux Kernel.

- **Severity:** Low 2.6 (`CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L`)
- **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:** No
- **Published:** 21 Oct 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-fm4c-gvmr-hvgr, UBUNTU-CVE-2022-3637

## What is CVE-2022-3637?

CVE-2022-3637 is a low-severity denial of service vulnerability in Linux Kernel, published on 21 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability has been found in Linux Kernel and classified as problematic. This vulnerability affects the function jlink_init of the file monitor/jlink.c of the component BlueZ. The manipulation leads to denial of service. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-211936.

Weakness: CWE-404 (Improper Resource Shutdown or Release)

## Which versions are affected by CVE-2022-3637?

It affects 1 product.


Products: Bluez Bluez.

## How do I fix CVE-2022-3637?

No fix has been published for CVE-2022-3637 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-3637 being exploited?

There is no known exploitation of CVE-2022-3637 in the wild and no public exploit code.

## Other vulnerabilities in Linux Kernel

- [CVE-2021-43400](https://insights.sbomify.com/CVE-2021-43400/): Use after free in n/a (critical 9.1)
- [CVE-2024-8805](https://insights.sbomify.com/CVE-2024-8805/): BlueZ HID over GATT Profile Improper Access Control Remote Code Execution Vulnerability (high 8.8)
- [CVE-2022-39176](https://insights.sbomify.com/CVE-2022-39176/): Information disclosure in n/a (high 8.8)
- [CVE-2022-39177](https://insights.sbomify.com/CVE-2022-39177/): Denial of service in n/a (high 8.8)
- [CVE-2022-0204](https://insights.sbomify.com/CVE-2022-0204/): Memory corruption in bluez (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-3637 and fix it if it is affected.

What it is: CVE-2022-3637 is a low-severity denial of service vulnerability in Linux Kernel, published on 21 Oct 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-2022-3637 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-2022-3637/ (Markdown: https://insights.sbomify.com/CVE-2022-3637/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-3637
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-3637
- OSV: https://osv.dev/vulnerability/CVE-2022-3637

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-3637/
Summaries are generated and may contain mistakes; the official description above is the record.