CVS commit: src/sys/netinet

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Fri Jan 20 19:21:01 UTC 2017

Modified Files:
        src/sys/netinet: if_arp.c

Log Message:
Make sure the protocol address length equals that of IPv4. Also, make sure
the hardware address length equals that of the interface we received the
packet on. Otherwise a packet could easily set them both to zero and make
the kernel read beyond the allocated mbuf, which is terrible.

Note: for the latter we drop the packet instead of replying, since it is
malformed.

Note: I also added an ugly hack in CARP, since it apparently expects at
least six bytes.


To generate a diff of this commit:
cvs rdiff -u -r1.237 -r1.238 src/sys/netinet/if_arp.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.