Date: Thu, 24 Feb 2000 11:21:27 -0800 (PST) From: Yoshinobu Inoue <shin@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern uipc_socket2.c Message-ID: <200002241921.LAA88863@freefall.freebsd.org>
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shin 2000/02/24 11:21:27 PST
Modified files:
sys/kern uipc_socket2.c
Log:
Add length check to sbcreatecontrol().
Now this check is necessary because IPv6 source routing might use
control data bigger than MLEN. (e.g. 16bytes IPv6 addr x 23 hops)
Actually mbuf cluster should be used in uipc_socket.c:sbcreatecontrol()
and uipc_syscalls.c:sockargs() when data size is bigger then MLEN,
and such patches were already in KAME environment and have been
confirmed to work well. I just forgot to merge them into 4.0, sorry.
For safety, I'll postpone such patches until after 4.0 release.
The effect of postponement is followings.
-Ping6 source routing hops are limitted to around 6 or so.
-If some apps do setsockopt IPV6_RTHDR and try to receive
incoming IPv6 source routing info, it can't receive more
than 6 hops source routing info.
(But currently, no apps seems to be doing it.)
Approved by: jkh
Revision Changes Path
1.54 +3 -1 src/sys/kern/uipc_socket2.c
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