CVE-2022-49246 ASoC: atmel: Fix error handling in snd_proto_probe
A refcount leak in the Linux kernel's Atmel ASoC driver error handling can lead to resource exhaustion and potential 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-2022-49246?
CVE-2022-49246 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:
ASoC: atmel: Fix error handling in snd_proto_probe
The device_node pointer is returned by of_parse_phandle() with refcount incremented. We should use of_node_put() on it when done.
This function only calls of_node_put() in the regular path. And it will cause refcount leak in error paths. Fix this by calling of_node_put() in error handling too.
Which versions are affected by CVE-2022-49246?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49246?
Apply the vendor's patch.
Is CVE-2022-49246 being exploited?
There is no known exploitation of CVE-2022-49246 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49246, GHSA-fhc6-fm3j-9cq8, ROOT-OS-DEBIAN-11-CVE-2022-49246, UBUNTU-CVE-2022-49246.