CVE-2026-72303 ASoC: SOF: ipc4-control: Validate notification payload size
A missing payload size validation in the Linux kernel's SOF IPC4 control handler can lead to a 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-2026-72303?
CVE-2026-72303 is a high-severity denial of service vulnerability in Linux, published on 15 Aug 2026. 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: SOF: ipc4-control: Validate notification payload size
Validate MODULE_NOTIFICATION payload length before reading bytes/channel data in control update handling.
Which versions are affected by CVE-2026-72303?
How do I fix CVE-2026-72303?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-72303 being exploited?
There is no known exploitation of CVE-2026-72303 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-72303, GHSA-gxm6-c5m3-mqfr, UBUNTU-CVE-2026-72303.