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CVE-2026-80771

Unknown

Last modified

CVE-2026-80771 is a vulnerability of currently unknown severity. 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..

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 2af16c1f846bd60240745bbd3afa13d5f040c61a, < 3288bec1a21d582b504344380139cdc0e88ebe4d; >= 2af16c1f846bd60240745bbd3afa13d5f040c61a, < 268679f501386ad46405d42c2bcf89384cb5e256; >= 2af16c1f846bd60240745bbd3afa13d5f040c61a, < a9fc7547f911ada09da33c5e204e5acda38e765a; >= 2af16c1f846bd60240745bbd3afa13d5f040c61a, < 27dc4b8eadac73b3c3cc526c8547d8b4ae8528be; >= 2af16c1f846bd60240745bbd3afa13d5f040c61a, < d723bc1fe2e72b9252234e94c11af644ec477bf7
LinuxLinux5.16

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-80771?
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.
How severe is CVE-2026-80771?
Severity scoring for CVE-2026-80771 is pending analysis.
How do I fix CVE-2026-80771?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST