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Re: Ubuntu RT2X00 WIFI USB Driver Kernel NULL pointer Dereference&Use-After-Free Vulnerability

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On Mon, Aug 19, 2024 at 11:11:10PM +0800, color Ice wrote:
> On some TP-Link routers or routers running OpenWrt, as well as Raspberry Pi
> devices with a headless setup and BeagleBone boards, certain USB
> configurations are required by default. These devices typically grant
> higher permissions to USB by default. Therefore, on certain devices, I can
> run a PoC without using sudo. This explains why there are some inherent
> risk scenarios when declaring this vulnerability, as there are many Linux
> distributions applied to different embedded devices.

I suggest filing bugs with those distros/system images so that they
properly remove the ability for users to reset any random USB device
this way.  If any user can disconnect any driver from any device, that's
not a good system...

Also, why not dig into the code and try to come up with a fix while
waiting?  The code is all there for everyone to read and resolve, that
way you get the proper credit for fixing the issue as well.

thanks,

greg k-h




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