CVE-2022-49243 ASoC: atmel: Add missing of_node_put() in at91sam9g20ek_audio_probe
A missing reference count decrement in the Linux kernel audio driver can lead to a memory leak, potentially causing resource exhaustion and denial of service.
- 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-2022-49243?
CVE-2022-49243 is a medium-severity memory corruption 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:
ASoC: atmel: Add missing of_node_put() in at91sam9g20ek_audio_probe
This node pointer is returned by of_parse_phandle() with refcount incremented in this function. Calling of_node_put() to avoid the refcount leak.
Which versions are affected by CVE-2022-49243?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49243?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-49243 being exploited?
There is no known exploitation of CVE-2022-49243 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49243, GHSA-g6gp-6q88-6j87, UBUNTU-CVE-2022-49243.