Re: [PATCH v3] firewire: cdev: check write quadlet request length toavoid buffer overflow

[Stefan Richter]

On  7 Jul, Clemens Ladisch wrote:
> Stefan Richter wrote:
>> [...] Thus the only problem is that a bogus write quadlet
>> request with user-specified length of < 3 will put 1...4 random bytes
>> into the packet payload.  But this is the user's problem then, not the
>> kernel's.
> 
> But not being initialized, these are the kernel's bytes that get
> disclosed.

Yes.  In which way can this be exploited though?  For all practical
purposes, the signal-to-noise ratio of these 1...4 bytes seems to be 0.
-- 
Stefan Richter
-=====-==-=- -=== --===
http://arcgraph.de/sr/

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