CVE-2026-93187 ASoC: SOF: ipc4-topology: Return error for invalid number of formats
A logic error in the Linux kernel's SOF audio driver fails to report setup failures, potentially leading to undefined behavior or 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-2026-93187?
CVE-2026-93187 is a vulnerability in Linux, published on 17 Sep 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-topology: Return error for invalid number of formats
When the number of input or output formats is zero, sof_ipc4_widget_setup_comp_src() and sof_ipc4_widget_setup_comp_asrc() print an error and jump to the cleanup label. At that point 'ret' is still 0, because the earlier sof_ipc4_get_audio_fmt() call succeeded, so the function returns success and the caller never finds out that the widget setup actually failed.
Set ret to -EINVAL before the goto so the error gets reported.
Which versions are affected by CVE-2026-93187?
How do I fix CVE-2026-93187?
Apply the vendor's patch.
Is CVE-2026-93187 being exploited?
There is no known exploitation of CVE-2026-93187 in the wild and no public exploit code.
Sources
Also known as GHSA-hmgp-9jc3-w35h, UBUNTU-CVE-2026-93187.