Messages in this thread Patch in this message | | | Date | Mon, 31 Oct 2005 13:20:21 +0800 | From | Yan Zheng <> | Subject | [PATCH][MCAST]IPv6: Check packet size when process Multicast Address and Source Specific Query |
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Signed-off-by: Yan Zheng <yanzheng@21cn.com>
Index: net/ipv6/mcast.c ================================================================================ --- linux-2.6.14/net/ipv6/mcast.c 2005-10-30 23:09:33.000000000 +0800 +++ linux/net/ipv6/mcast.c 2005-10-31 13:13:10.000000000 +0800 @@ -1156,7 +1156,12 @@ int igmp6_event_query(struct sk_buff *sk return 0; } /* mark sources to include, if group & source-specific */ - mark = mlh2->nsrcs != 0; + if (mlh2->nsrcs != 0) { + if (!pskb_may_pull(skb, mlh2->nsrcs * sizeof(struct in6_addr) + + (sizeof(struct mld2_query) - sizeof(struct icmp6hdr)))) + return -EINVAL; + mark = 1; + } } 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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