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(parent: c9ffebd) | patch
bpfilter: reject kernel addresses
authorChristoph Hellwig <hch@lst.de>
Thu, 23 Jul 2020 06:08:45 +0000 (08:08 +0200)
committerDavid S. Miller <davem@davemloft.net>
Fri, 24 Jul 2020 22:41:53 +0000 (15:41 -0700)
commitd200cf624c9247ab52b67d34d9e198262a23df31
tree7eb16c965917dd917b545cccfc5a4d1fff1854d6tree | snapshot
parentc9ffebdde8deccf9ea3a7a97bcd84de0a35ddad7commit | diff
bpfilter: reject kernel addresses

The bpfilter user mode helper processes the optval address using
process_vm_readv.  Don't send it kernel addresses fed under
set_fs(KERNEL_DS) as that won't work.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/bpfilter/bpfilter_kern.c diff | blob | history
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