CVE-2025-40132 ASoC: Intel: sof_sdw: Prevent jump to NULL add_sidecar callback
A missing null check in the Linux kernel's Intel SoundWire driver allows a local attacker to cause a system crash via a null pointer dereference.
- 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-2025-40132?
CVE-2025-40132 is a vulnerability in Linux, published on 12 Nov 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: Intel: sof_sdw: Prevent jump to NULL add_sidecar callback
In create_sdw_dailink() check that sof_end->codec_info->add_sidecar is not NULL before calling it.
The original code assumed that if include_sidecar is true, the codec on that link has an add_sidecar callback. But there could be other codecs on the same link that do not have an add_sidecar callback.
Which versions are affected by CVE-2025-40132?
How do I fix CVE-2025-40132?
Apply the vendor's patch.
Is CVE-2025-40132 being exploited?
There is no known exploitation of CVE-2025-40132 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-40132, DEBIAN-CVE-2025-40132, GHSA-29v4-89fg-g7q9, ROOT-OS-DEBIAN-13-CVE-2025-40132, UBUNTU-CVE-2025-40132.