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authorStefan Richter <stefanr@s5r6.in-berlin.de>2009-01-04 16:23:29 +0100
committerStefan Richter <stefanr@s5r6.in-berlin.de>2009-03-24 20:56:45 +0100
commit1566f3dc3e5986a16c7bbb3bb95bb691251a8d25 (patch)
tree3a6a5f6c29cbd9d71354fede1e6da69273ec803d /net/rxrpc/ar-connevent.c
parentacfe8333572cad5dc70fce18ac966be0446548d7 (diff)
firewire: cdev: restrict broadcast write requests to Units Space
We don't want random users write to Memory Space (e.g. PCs with physical DMA filters down) or to core CSRs like Reset_Start. This does not protect SBP-2 target CSRs. But properly behaving SBP-2 targets ignore broadcast write requests to these registers, and the maximum damage which can happen with laxer targets is DOS. But there are ways to create DOS situations anyway if there are devices with weak device file permissions (like audio/video devices) present at the same bus as an SBP-2 target. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'net/rxrpc/ar-connevent.c')
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