CVE-2026-98971 gpio: exar: initialize the ID before registering its cleanup
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-98971?
CVE-2026-98971 is a vulnerability in Linux, published on 23 Oct 2026.
Official description
In the Linux kernel, the following vulnerability has been resolved:
gpio: exar: initialize the ID before registering its cleanup
devm_add_action_or_reset() invokes the cleanup action immediately when registering the action fails. gpio_exar_probe() currently stores the allocated ID in exar_gpio only after registering the action, so that failure makes exar_devm_ida_free() release ID 0. If the allocated ID is nonzero, this leaks that ID and can free ID 0 belonging to another device.
Store the ID before registering the cleanup action so both the immediate failure path and normal device teardown release the correct allocation.
Which versions are affected by CVE-2026-98971?
How do I fix CVE-2026-98971?
Upgrade to a fixed version.
Is CVE-2026-98971 being exploited?
There is no known exploitation of CVE-2026-98971 in the wild and no public exploit code.
Sources
Also known as AZL-110795, BELL-CVE-2026-98971, DEBIAN-CVE-2026-98971, GHSA-x5r8-cmvp-6558, UBUNTU-CVE-2026-98971.