CVE-2026-80771

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux2af16c1f846bd60240745bbd3afa13d5f040c61a < 3288bec1a21d582b504344380139cdc0e88ebe4daffected
LinuxLinux2af16c1f846bd60240745bbd3afa13d5f040c61a < 268679f501386ad46405d42c2bcf89384cb5e256affected
LinuxLinux2af16c1f846bd60240745bbd3afa13d5f040c61a < a9fc7547f911ada09da33c5e204e5acda38e765aaffected
LinuxLinux2af16c1f846bd60240745bbd3afa13d5f040c61a < 27dc4b8eadac73b3c3cc526c8547d8b4ae8528beaffected
LinuxLinux2af16c1f846bd60240745bbd3afa13d5f040c61a < d723bc1fe2e72b9252234e94c11af644ec477bf7affected
LinuxLinux5.16affected
LinuxLinux0 < 5.16unaffected
LinuxLinux6.12.106 <= 6.12.*unaffected
LinuxLinux6.18.47 <= 6.18.*unaffected
LinuxLinux7.1.11 <= 7.1.*unaffected
LinuxLinux7.2.1 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References