# CVE-2026-80771: HID: nintendo: register input device after capabilities are set

CVE-2026-80771 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-80771, released September 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-80771
- Priority: Routine
- CVSS: 4.7 (Moderate)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 4, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.107-1 | [DEBIAN-CVE-2026-80771](https://patchblox.com/security/data/fix/linux/debian-cve-2026-80771.md) | Sep 5, 2026 |
| Linux | linux Debian 14 | 7.1.12-1 | [DEBIAN-CVE-2026-80771](https://patchblox.com/security/data/fix/linux/debian-cve-2026-80771.md) | Sep 5, 2026 |
| Linux | linux-6.12 Debian 12.15 (bookworm) | 6.12.107-1~deb12u1 | [DEBIAN-CVE-2026-80771](https://patchblox.com/security/data/fix/linux/debian-cve-2026-80771.md) | Sep 5, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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