CVE-2022-50023 dmaengine: dw-axi-dmac: ignore interrupt if no descriptor
A null pointer dereference in the dw-axi-dmac driver causes a kernel OOPS when an interrupt occurs without a descriptor, leading to 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-2022-50023?
CVE-2022-50023 is a medium-severity vulnerability in Linux kernel, published on 18 Jun 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:
dmaengine: dw-axi-dmac: ignore interrupt if no descriptor
If the channel has no descriptor and the interrupt is raised then the kernel will OOPS. Check the result of vchan_next_desc() in the handler axi_chan_block_xfer_complete() to avoid the error happening.
Which versions are affected by CVE-2022-50023?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50023?
Apply the vendor's patch.
Is CVE-2022-50023 being exploited?
There is no known exploitation of CVE-2022-50023 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50023, GHSA-538c-94wq-rm22, ROOT-OS-DEBIAN-11-CVE-2022-50023, UBUNTU-CVE-2022-50023.