CVE-2026-31545 NFC: nxp-nci: allow GPIOs to sleep
A missing sleep flag in the NXP NFC driver causes kernel warnings and potential instability when using I2C GPIO expanders, requiring a kernel patch.
- 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-2026-31545?
CVE-2026-31545 is a medium-severity denial of service vulnerability in Linux kernel, published on 24 Apr 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:
NFC: nxp-nci: allow GPIOs to sleep
Allow the firmware and enable GPIOs to sleep.
This fixes a `WARN_ON' and allows the driver to operate GPIOs which are connected to I2C GPIO expanders.
-- >8 -- kernel: WARNING: CPU: 3 PID: 2636 at drivers/gpio/gpiolib.c:3880 gpiod_set_value+0x88/0x98 -- >8 --
Which versions are affected by CVE-2026-31545?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-31545?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-31545 being exploited?
There is no known exploitation of CVE-2026-31545 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-31545, DEBIAN-CVE-2026-31545, GHSA-3ffm-mmhr-cmvg, ROOT-OS-DEBIAN-11-CVE-2026-31545, ROOT-OS-DEBIAN-12-CVE-2026-31545, ROOT-OS-UBUNTU-2204-CVE-2026-31545 and 2 more.