Messages in this thread | | | Date | Wed, 22 Feb 2012 10:20:56 -0800 | From | "H. Peter Anvin" <> | Subject | Re: compat: autofs v5 packet size ambiguity - update |
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On 02/22/2012 10:16 AM, Linus Torvalds wrote: > > Because that padding word for size is just random data. > > In fact, we probably should clear it. I suspect we leak kernel stack > contents to autofs. Not that it matters (system daemon with root > privileges and all that), but it's another case of the whole "packing > data structures" issue. >
Fortunately this is not true -- there is a memset(0) of the entire packet before the packet is built in kernel space. Otherwise we'd have a security hole.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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