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ipv6: Check the hop limit setting in ancillary data. 

When specifing the outgoing hop limit as ancillary data for sendmsg(),
the kernel doesn't check the integer hop limit value as specified in
[RFC-3542] section 6.3.

Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
This commit is contained in:
Shan Wei 2008-06-10 15:50:55 +08:00 committed by YOSHIFUJI Hideaki
parent 36e3deae8b
commit e8766fc86b
1 changed files with 5 additions and 0 deletions
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5
net/ipv6/datagram.c
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@ -705,6 +705,11 @@ int datagram_send_ctl(struct net *net,
}
*hlimit = *(int *)CMSG_DATA(cmsg);
if (*hlimit < -1 || *hlimit > 0xff) {
err = -EINVAL;
goto exit_f;
}
break;
case IPV6_TCLASS: