CVE-2026-93038 iio: dac: ad5686: missing NULL check on match data
A local attacker can cause a kernel crash by binding the AD5686 DAC driver with an invalid device name, leading to a null pointer dereference.
- 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-2026-93038?
CVE-2026-93038 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:
iio: dac: ad5686: missing NULL check on match data
Verify that chip_info pointer is not NULL. If a user binds the driver using driver_override via sysfs with a device name not present in the id_table or of_match_table, match data will be NULL.
Which versions are affected by CVE-2026-93038?
How do I fix CVE-2026-93038?
Apply the vendor's patch.
Is CVE-2026-93038 being exploited?
There is no known exploitation of CVE-2026-93038 in the wild and no public exploit code.
Sources
Also known as GHSA-r39j-7x3q-pfv9, UBUNTU-CVE-2026-93038.