Messages in this thread Patch in this message | | | Date | Wed, 09 Nov 2005 20:35:26 +0800 | From | Yan Zheng <> | Subject | [PATCH][MCAST]Check packet size when process Multicast Address and Source Specific Query |
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The patch changes the old one to equivalent code in IGMPv3 as David Stevens's suggestion http://lkml.org/lkml/2005/10/31/221
Regards
Signed-off-by: Yan Zheng<yanzheng@21cn.com>
Index:net/ipv6/mcast.c ==============================================================
--- linux-2.6.14/net/ipv6/mcast.c 2005-11-09 16:00:48.000000000 +0800 +++ linux/net/ipv6/mcast.c 2005-11-09 16:20:03.000000000 +0800 @@ -1149,6 +1149,14 @@ int igmp6_event_query(struct sk_buff *sk return -EINVAL; } mlh2 = (struct mld2_query *) skb->h.raw; + if (mlh2->nsrcs != 0) { + if (!pskb_may_pull(skb, srcs_offset + + mlh2->nsrcs * sizeof(struct in6_addr))) { + in6_dev_put(idev); + return -EINVAL; + } + mlh2 = (struct mld2_query *) skb->h.raw; + } max_delay = (MLDV2_MRC(ntohs(mlh2->mrc))*HZ)/1000; if (!max_delay) max_delay = 1; @@ -1165,15 +1173,7 @@ int igmp6_event_query(struct sk_buff *sk return 0; } /* mark sources to include, if group & source-specific */ - if (mlh2->nsrcs != 0) { - if (!pskb_may_pull(skb, srcs_offset + - mlh2->nsrcs * sizeof(struct in6_addr))) { - in6_dev_put(idev); - return -EINVAL; - } - mlh2 = (struct mld2_query *) skb->h.raw; - mark = 1; - } + mark = mlh2->nsrcs != 0; } else { in6_dev_put(idev); return -EINVAL; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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