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| author | Simon Arlott <simon@fire.lp0.eu> | 2010-05-03 12:19:33 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-05-03 22:27:00 +0200 |
| commit | ea8420e9f5dff7324607671f0b7ab7fbf726339d (patch) | |
| tree | dc7b905fd3a5b76f00705cd76d25e12cced842f5 /Documentation/ia64 | |
| parent | net: fix compile error due to double return type in SOCK_DEBUG (diff) | |
| download | linux-ea8420e9f5dff7324607671f0b7ab7fbf726339d.tar.xz linux-ea8420e9f5dff7324607671f0b7ab7fbf726339d.zip | |
ppp_generic: pull 2 bytes so that PPP_PROTO(skb) is valid
In ppp_input(), PPP_PROTO(skb) may refer to invalid data in the skb.
If this happens and (proto >= 0xc000 || proto == PPP_CCPFRAG) then
the packet is passed directly to pppd.
This occurs frequently when using PPPoE with an interface MTU
greater than 1500 because the skb is more likely to be non-linear.
The next 2 bytes need to be pulled in ppp_input(). The pull of 2
bytes in ppp_receive_frame() has been removed as it is no longer
required.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/ia64')
0 files changed, 0 insertions, 0 deletions