CVE-2026-90258 pinctrl: airoha: add missed IRQ resource helpers
A missing IRQ resource helper in the Airoha pinctrl driver allows local users to reconfigure active IRQ pins, potentially leading to privilege escalation.
- 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-2026-90258?
CVE-2026-90258 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:
pinctrl: airoha: add missed IRQ resource helpers
Without hooking .irq_request_resources, gpiolib cannot set GPIOD_FLAG_USED_AS_IRQ. This breaks pin direction locking and can allow userspace or another driver to reconfigure an active IRQ pin as an output
Which versions are affected by CVE-2026-90258?
How do I fix CVE-2026-90258?
Apply the vendor's patch.
Is CVE-2026-90258 being exploited?
There is no known exploitation of CVE-2026-90258 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-90258, DEBIAN-CVE-2026-90258, GHSA-cg6w-564g-phrg, UBUNTU-CVE-2026-90258.