CVE-2026-72261 ASoC: SOF: ipc3-control: Validate size in snd_sof_update_control
A missing bounds check in the Linux kernel's SOF driver allows a buffer overflow via firmware data, potentially enabling code execution or privilege escalation.
- 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-2026-72261?
CVE-2026-72261 is a high-severity memory corruption 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: ipc3-control: Validate size in snd_sof_update_control
In snd_sof_update_control(), firmware-provided cdata->num_elems is checked against local_cdata->data->size but never against the actual allocation size. If local_cdata->data->size was previously set to an inconsistent value, the memcpy could write past the allocated buffer.
Add a bounds check to ensure num_elems fits within the available space in the ipc_control_data allocation before copying.
Which versions are affected by CVE-2026-72261?
How do I fix CVE-2026-72261?
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-2026-72261 being exploited?
There is no known exploitation of CVE-2026-72261 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72261, DEBIAN-CVE-2026-72261, GHSA-rv5q-q8w5-hj4r, UBUNTU-CVE-2026-72261.