CVE-2022-49538 ALSA: jack: Access input_dev under mutex
A race condition in the Linux kernel ALSA jack subsystem can cause a NULL pointer dereference, leading to a system crash.
- 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
What is CVE-2022-49538?
CVE-2022-49538 is a medium-severity vulnerability in Linux kernel, published on 26 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ALSA: jack: Access input_dev under mutex
It is possible when using ASoC that input_dev is unregistered while calling snd_jack_report, which causes NULL pointer dereference. In order to prevent this serialize access to input_dev using mutex lock.
Weakness: CWE-476
Which versions are affected by CVE-2022-49538?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49538?
Apply the vendor's patch.
Is CVE-2022-49538 being exploited?
There is no known exploitation of CVE-2022-49538 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49538, GHSA-qfpm-q7vw-vgqq, UBUNTU-CVE-2022-49538.