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

Low 2.6 Published 21 Oct 2022 Updated 15 Apr 2025

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

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

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

Which versions are affected by CVE-2022-3637?

It affects 1 product.

Products include 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.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-3637 being exploited?

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

Sources

Also known as GHSA-fm4c-gvmr-hvgr, UBUNTU-CVE-2022-3637.