CVE-2026-43140

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux64eb105d7f92fa48798106ac0d8bf17668eb2524 < db5ba06e7af9325519a03e52fccf4a9e7c1fd9b2affected
LinuxLinux64eb105d7f92fa48798106ac0d8bf17668eb2524 < 165912d4321c692321c02793068d30700b4e0f1aaffected
LinuxLinux64eb105d7f92fa48798106ac0d8bf17668eb2524 < f6a3860241fbb556fd72332fa31c5e787004413baffected
LinuxLinux64eb105d7f92fa48798106ac0d8bf17668eb2524 < 243e1165eb03aca97d87aafa9c3130593837a1c2affected
LinuxLinux64eb105d7f92fa48798106ac0d8bf17668eb2524 < 922bd3e498a4b8e445def6e6ffea2ad3682ad516affected
LinuxLinux64eb105d7f92fa48798106ac0d8bf17668eb2524 < 5bbe266272d86c0657e8253600f3d5b74fb7b2aeaffected
LinuxLinux64eb105d7f92fa48798106ac0d8bf17668eb2524 < 36c83c1329dd881f290f7df2feadfb9a21775108affected
LinuxLinux64eb105d7f92fa48798106ac0d8bf17668eb2524 < 17abd396548035fbd6179ee1a431bd75d49676a7affected
LinuxLinux2.6.37affected
LinuxLinux0 < 2.6.37unaffected
LinuxLinux5.10.252 <= 5.10.*unaffected
LinuxLinux5.15.202 <= 5.15.*unaffected
LinuxLinux6.1.165 <= 6.1.*unaffected
LinuxLinux6.6.128 <= 6.6.*unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.16 <= 6.18.*unaffected
LinuxLinux6.19.6 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References