Re: [PATCH] pptp: reject payloads shorter than the PPP protocol field

Simon,

thanks for the review. Your concern is valid: payload_len is only a
lower bound since the skb is never trimmed to headersize + payload_len,
so bounding the new checks by the peer-advertised value instead of the
bytes actually present (skb->len - headersize) would indeed change the
receive behaviour for a peer that under-reports payload_len, as you
described.

Given that, and that this duplicates the earlier pptp patch from
Zhixing Chen which carries the same concern, I am withdrawing this
patch rather than posting a v2.

Sorry for the noise.

Chuyf26