net: Validate IFLA_BRIDGE_MODE attribute length
Payload is currently accessed blindly and may exceed valid message boundaries. Fixes: a77dcb8c ("be2net: set and query VEB/VEPA mode of the PF interface") Fixes: 815cccbf ("ixgbe: add setlink, getlink support to ixgbe and ixgbevf") Cc: Ajit Khaparde <ajit.khaparde@emulex.com> Cc: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: NThomas Graf <tgraf@suug.ch> Acked-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com> Acked-by: NJohn Fastabend <john.r.fastabend@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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