CVE-2026-80771
Description
In the Linux kernel, the following vulnerability has been resolved:
HID: nintendo: register input device after capabilities are set
input_register_device() exposes the device to userspace immediately. In joycon_input_create() it was called before joycon_config_rumble() configures the FF_RUMBLE capability and the memless force-feedback device, so a concurrent EVIOCSFF could dereference a NULL dev->ff.
Registering early also means the initial udev event lacks button and axis information, which can make input managers ignore the device.
Move input_register_device() to the end of joycon_input_create(), after all capabilities, the IMU input device and the force-feedback callbacks have been configured.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/268679f501386ad46405d42c2bcf89384cb5e256nvd
- git.kernel.org/stable/c/27dc4b8eadac73b3c3cc526c8547d8b4ae8528benvd
- git.kernel.org/stable/c/3288bec1a21d582b504344380139cdc0e88ebe4dnvd
- git.kernel.org/stable/c/a9fc7547f911ada09da33c5e204e5acda38e765anvd
- git.kernel.org/stable/c/d723bc1fe2e72b9252234e94c11af644ec477bf7nvd
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