esp: Fix GRO when the headers not fully in the linear part of the skb.

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The GRO layer does not necessarily pull the complete headers
into the linear part of the skb, a part may remain on the
first page fragment. This can lead to a crash if we try to
pull the headers, so make sure we have them on the linear
part before pulling.

Fixes: 7785bba299 ("esp: Add a software GRO codepath")
Reported-by: syzbot+82bbd65569c49c6c0c4d@syzkaller.appspotmail.com
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

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This commit is contained in:

Steffen Klassert 2018-01-05 08:35:47 +01:00

parent b1bdcb59b6

commit 374d1b5a81

2 changed files with 4 additions and 2 deletions

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3

net/ipv4/esp4_offload.c

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3

net/ipv6/esp6_offload.c

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