CVE-2026-43140

MediumCVSS 5.5/10Last modified Nov 11, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

HID: magicmouse: Do not crash on missing msc->input

Fake USB devices can send their own report descriptors for which the input_mapping() hook does not get called. In this case, msc->input stays NULL, leading to a crash at a later time.

Detect this condition in the input_configured() hook and reject the device.

This is not supposed to happen with actual magic mouse devices, but can be provoked by imposing as a magic mouse USB device.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

VendorProductVersions
LinuxLinux>= 64eb105d7f92fa48798106ac0d8bf17668eb2524, < db5ba06e7af9325519a03e52fccf4a9e7c1fd9b2; >= 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 165912d4321c692321c02793068d30700b4e0f1a; >= 64eb105d7f92fa48798106ac0d8bf17668eb2524, < f6a3860241fbb556fd72332fa31c5e787004413b; >= 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 243e1165eb03aca97d87aafa9c3130593837a1c2; >= 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 922bd3e498a4b8e445def6e6ffea2ad3682ad516; >= 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 5bbe266272d86c0657e8253600f3d5b74fb7b2ae; >= 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 36c83c1329dd881f290f7df2feadfb9a21775108; >= 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 17abd396548035fbd6179ee1a431bd75d49676a7
LinuxLinux2.6.37

References

Timeline

Published
May 6, 2026
Last modified
Nov 11, 2026
NVD status
Analyzed

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CVE-2026-43140: Medium severity, CVSS 5.5 | Vulnix