[IPV4] raw: Strengthen check on validity of iph->ihl

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We currently check that iph->ihl is bounded by the real length and that
the real length is greater than the minimum IP header length.  However,
we did not check the caes where iph->ihl is less than the minimum IP
header length.

This breaks because some ip_fast_csum implementations assume that which
is quite reasonable.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Herbert Xu 2008-01-05 23:14:44 -08:00 • committed by David S. Miller

parent cb77df3ec8

commit f844c74fe0

1 changed files with 3 additions and 1 deletions

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net/ipv4/raw.c

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