CVE-2026-80771 - Vulnerability Details

- HID: nintendo: register input device after capabilities are set

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.

Published: 2026-09-04

Score: n/a

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

The Linux kernel’s HID Nintendo driver registers an input device before fully configuring its force‑feedback capabilities. When a user process simultaneously issues an EVIOCSFF ioctl, the driver may dereference a null dev->ff pointer, causing a kernel crash. This flaw can be exploited to crash the kernel, resulting in a denial‑of‑service condition for the affected system.

Affected Systems

The vulnerability exists in the Linux kernel, specifically the HID Nintendo driver. Any kernel build containing the unpatched HID Nintendo code path is impacted. Systems running recent kernels will receive the fix via the forthcoming kernel update.

Risk and Exploitability

The EPSS score is not available and the vulnerability is not listed in CISA KEV. The CVSS score is not provided, but the described null pointer dereference in a kernel driver indicates high severity. The vulnerability requires local interaction with a JoyCon device during creation; a privileged or local user can trigger a system crash or reboot, causing denial of service.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`2af16c1f846bd60240745bbd3afa13d5f040c61a`	affected	< 3288bec1a21d582b504344380139cdc0e88ebe4d
`2af16c1f846bd60240745bbd3afa13d5f040c61a`	affected	< 268679f501386ad46405d42c2bcf89384cb5e256
`2af16c1f846bd60240745bbd3afa13d5f040c61a`	affected	< a9fc7547f911ada09da33c5e204e5acda38e765a
`2af16c1f846bd60240745bbd3afa13d5f040c61a`	affected	< 27dc4b8eadac73b3c3cc526c8547d8b4ae8528be
`2af16c1f846bd60240745bbd3afa13d5f040c61a`	affected	< d723bc1fe2e72b9252234e94c11af644ec477bf7

Linux

affected

Version	Status	Constraints
`5.16`	affected	—
`0`	unaffected	< 5.16
`6.12.106`	unaffected	≤ 6.12.*
`6.18.47`	unaffected	≤ 6.18.*
`7.1.11`	unaffected	≤ 7.1.*
`7.2.1`	unaffected	≤ 7.2.*
`7.3-rc1`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[2af16c1f846bd60240745bbd3afa13d5f040c61a,3288bec1a21d582b504344380139cdc0e88ebe4d)`	affected	code_commit	—
`[2af16c1f846bd60240745bbd3afa13d5f040c61a,268679f501386ad46405d42c2bcf89384cb5e256)`	affected	code_commit	—
`[2af16c1f846bd60240745bbd3afa13d5f040c61a,a9fc7547f911ada09da33c5e204e5acda38e765a)`	affected	code_commit	—
`[2af16c1f846bd60240745bbd3afa13d5f040c61a,27dc4b8eadac73b3c3cc526c8547d8b4ae8528be)`	affected	code_commit	—
`[2af16c1f846bd60240745bbd3afa13d5f040c61a,d723bc1fe2e72b9252234e94c11af644ec477bf7)`	affected	code_commit	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`5.16`	affected	generic	—
`[0,5.16)`	unaffected	semver	—
`[6.12.106,6.13.0)`	unaffected	semver	—
`[6.18.47,6.19.0)`	unaffected	semver	—
`[7.1.11,7.2.0)`	unaffected	semver	—
`[7.2.1,7.3.0)`	unaffected	semver	—
`[7.3-rc1,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Update the Linux kernel to a version that includes the patch moving input_register_device after capabilities are configured, as referenced in the kernel commits.
If an immediate kernel upgrade is not feasible, temporarily disable force‑feedback support for JoyCon devices by removing the FF_RUMBLE capability or preventing EVIOCSFF handling until after the device is fully initialized as a temporary workaround.
Continuously monitor system logs for kernel panic or memory error messages related to input handling.

Generated by OpenCVE AI on September 4, 2026 at 17:51 UTC.

Tracking

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Advisories

Source	ID	Title
Debian DLA	DLA-4788-1	linux-6.12 security update

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00209.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/268679f501386ad46405d42c2bcf89384cb5e256
https://git.kernel.org/stable/c/27dc4b8eadac73b3c3cc526c8547d8b4ae8528be
https://git.kernel.org/stable/c/3288bec1a21d582b504344380139cdc0e88ebe4d
https://git.kernel.org/stable/c/a9fc7547f911ada09da33c5e204e5acda38e765a
https://git.kernel.org/stable/c/d723bc1fe2e72b9252234e94c11af644ec477bf7

History

Fri, 04 Sep 2026 18:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-476

Fri, 04 Sep 2026 15:30:00 +0000

Type	Values Removed	Values Added
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.
Title		HID: nintendo: register input device after capabilities are set
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/268679f501386ad46405d42c2bcf89384cb5e256 https://git.kernel.org/stable/c/27dc4b8eadac73b3c3cc526c8547d8b4ae8528be https://git.kernel.org/stable/c/3288bec1a21d582b504344380139cdc0e88ebe4d https://git.kernel.org/stable/c/a9fc7547f911ada09da33c5e204e5acda38e765a https://git.kernel.org/stable/c/d723bc1fe2e72b9252234e94c11af644ec477bf7

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-09-04T15:12:43.246Z

Updated: 2026-09-04T15:12:43.246Z

Reserved: 2026-08-26T14:34:25.792Z

Link: CVE-2026-80771

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-04T16:18:02.620

Modified: 2026-09-04T16:18:02.620

Link: CVE-2026-80771

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-04T18:00:04Z

Weaknesses

CWE-476
NULL Pointer Dereference

Impact

Affected Systems

Risk and Exploitability

Tracking

Subscriptions

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