CVE-2026-98666 iio: gyro: adis16136: fix unprotected debugfs reads
A use-after-free vulnerability in the Linux kernel adis16136 gyro driver allows local attackers to cause a denial of service or potentially execute code via debugfs reads.
- 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-2026-98666?
CVE-2026-98666 is an use after free vulnerability in Linux, published on 18 Oct 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: gyro: adis16136: fix unprotected debugfs reads
The serial_number file operations are open coded and never call debugfs_file_get(), which debugfs_create_file_unsafe() requires. debugfs_remove_recursive() therefore does not wait for a read in progress, and unbind frees the iio_dev underneath it.
Use debugfs_create_file() instead.
Which versions are affected by CVE-2026-98666?
How do I fix CVE-2026-98666?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-98666 being exploited?
There is no known exploitation of CVE-2026-98666 in the wild and no public exploit code.
Sources
Also known as AZL-108705, BELL-CVE-2026-98666, DEBIAN-CVE-2026-98666, GHSA-fw25-7hvg-9627, UBUNTU-CVE-2026-98666.