CVE-2022-50572 ASoC: audio-graph-card: fix refcount leak of cpu_ep in __graph_for_each_link()
A refcount leak in the Linux kernel's audio-graph-card driver can lead to memory exhaustion and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-50572?
CVE-2022-50572 is a memory corruption vulnerability in Linux, published on 22 Oct 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: audio-graph-card: fix refcount leak of cpu_ep in __graph_for_each_link()
The of_get_next_child() returns a node with refcount incremented, and decrements the refcount of prev. So in the error path of the while loop, of_node_put() needs be called for cpu_ep.
Which versions are affected by CVE-2022-50572?
How do I fix CVE-2022-50572?
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-2022-50572 being exploited?
There is no known exploitation of CVE-2022-50572 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50572, GHSA-7468-vjg6-f8cm, UBUNTU-CVE-2022-50572.