vrf: Fix use after free and double free in vrf_finish_output

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Miguel reported an skb use after free / double free in vrf_finish_output
when neigh_output returns an error. The vrf driver should return after
the call to neigh_output as it takes over the skb on error path as well.

Patch is a simplified version of Miguel's patch which was written for 4.9,
and updated to top of tree.

Fixes: 8f58336d3f ("net: Add ethernet header for pass through VRF device")
Signed-off-by: Miguel Fadon Perlines <mfadon@teldat.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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David Ahern 2018-03-29 12:49:52 -07:00 • committed by David S. Miller

parent 5807b22c91

commit 82dd0d2a9a

1 changed files with 3 additions and 2 deletions

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drivers/net/vrf.c

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