# CVE-2022-3563: Linux Kernel BlueZ mgmt-tester.c read_50_controller_cap_complete null pointer dereference

> A null pointer dereference in the Linux Kernel BlueZ component allows attackers to cause a denial of service.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:A/AC:L/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:** Yes
- **Published:** 17 Oct 2022
- **Updated:** 15 Apr 2025
- **Also known as:** AZL-29945, AZL-34569, DEBIAN-CVE-2022-3563, GHSA-h7mh-ffww-7v4w, SUSE-SU-2023:0167-1, UBUNTU-CVE-2022-3563

## What is CVE-2022-3563?

CVE-2022-3563 is a low-severity vulnerability in Linux Kernel, published on 17 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability classified as problematic has been found in Linux Kernel. Affected is the function read_50_controller_cap_complete of the file tools/mgmt-tester.c of the component BlueZ. The manipulation of the argument cap_len leads to null pointer dereference. It is recommended to apply a patch to fix this issue. VDB-211086 is the identifier assigned to this vulnerability.

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

## Which versions are affected by CVE-2022-3563?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `bluez` | SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 5.62-150400.4.8.1 |
| `bluez` | SUSE:Linux Enterprise Module for Desktop Applications 15 SP4 | All versions | 5.62-150400.4.8.1 |
| `bluez` | SUSE:Linux Enterprise Workstation Extension 15 SP4 | All versions | 5.62-150400.4.8.1 |
| `bluez` | openSUSE:Leap 15.4 | All versions | 5.62-150400.4.8.1 |

Products: Bluez Bluez.

## How do I fix CVE-2022-3563?

Apply the vendor's patch.

## Is CVE-2022-3563 being exploited?

There is no known exploitation of CVE-2022-3563 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-2022-3563 and fix it if it is affected.

What it is: CVE-2022-3563 is a low-severity vulnerability in Linux Kernel, published on 17 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-2022-3563 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-2022-3563/ (Markdown: https://insights.sbomify.com/CVE-2022-3563/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-3563
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-3563
- OSV: https://osv.dev/vulnerability/CVE-2022-3563

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-3563/
Summaries are generated and may contain mistakes; the official description above is the record.