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| author |   Michael S. Tsirkin <mst@redhat.com> | 2013-03-17 02:46:09 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-03-17 14:28:54 -0400 |
| commit | 46aa92d1ba162b4b3d6b7102440e459d4e4ee255 (patch) | |
| tree | 98dd50e4b0420724c04fe00b188155fcb41a4476 /drivers/net/ethernet | |
| parent | bridge: Add support for setting BR_ROOT_BLOCK flag. (diff) | |
| download | linux-dev-46aa92d1ba162b4b3d6b7102440e459d4e4ee255.tar.xz linux-dev-46aa92d1ba162b4b3d6b7102440e459d4e4ee255.zip | |
vhost/net: fix heads usage of ubuf_info
ubuf info allocator uses guest controlled head as an index,
so a malicious guest could put the same head entry in the ring twice,
and we will get two callbacks on the same value.
To fix use upend_idx which is guaranteed to be unique.
Reported-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
0 files changed, 0 insertions, 0 deletions