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[dm] do not forward ioctls from logical volumes to the underlying device
authorJoe Jin <joe.jin@oracle.com>
Fri, 23 Dec 2011 02:00:27 +0000 (10:00 +0800)
committerMaxim Uvarov <maxim.uvarov@oracle.com>
Thu, 17 May 2012 17:51:46 +0000 (10:51 -0700)
commit528fa4bfd55395db4694d3c14f1e982bfd4aec8d
tree76185b118a734437580b9f27103c0166bddeacd8tree
parentf02116914fe36105c0bdd7b4be627c8c15389ef2commit | diff
[dm] do not forward ioctls from logical volumes to the underlying device

CVE-2011-4127.

A logical volume can map to just part of underlying physical volume.
In this case, it must be treated like a partition.

Based on a patch from Alasdair G Kergon.

Cc: Alasdair G Kergon <agk@redhat.com>
Cc: Mike Snitzer <msnitzer@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Joe Jin <joe.jin@oracle.com>
drivers/md/dm-linear.c diff | blob | history
drivers/md/dm-mpath.c diff | blob | history
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