In the Linux kernel, the following vulnerability has been resolved:
net: asix: add proper error handling of usb read errors
Syzbot once again hit uninit value in asix driver. The problem still the same -- asixreadcmd() reads less bytes, than was requested by caller.
Since all read requests are performed via asixreadcmd() let's catch usb related error there and add _mustcheck notation to be sure all callers actually check return value.
So, this patch adds sanity check inside asixreadcmd(), that simply checks if bytes read are not less, than was requested and adds missing error handling of asixreadcmd() all across the driver code.