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ipv6: Check the hop limit setting in ancillary data.

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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: