CVE-2026-43140

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.

References

• https://git.kernel.org/stable/c/165912d4321c692321c02793068d30700b4e0f1a
• https://git.kernel.org/stable/c/17abd396548035fbd6179ee1a431bd75d49676a7
• https://git.kernel.org/stable/c/243e1165eb03aca97d87aafa9c3130593837a1c2
• https://git.kernel.org/stable/c/36c83c1329dd881f290f7df2feadfb9a21775108
• https://git.kernel.org/stable/c/5bbe266272d86c0657e8253600f3d5b74fb7b2ae