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authorWei Yongjun <yjwei@cn.fujitsu.com>2008-05-09 15:11:53 -0700
committerDavid S. Miller <davem@davemloft.net>2008-05-12 03:11:48 -0700
commitc4492586a618d18e8a5343a04bad0ec606064846 (patch)
treecf9f5a38e3e9330edf61699f5c4cb8ae8876b879
parent6e40a915de82e00d18f75941e531b40c4e0d94c4 (diff)
sctp: Add address type check while process paramaters of ASCONF chunk
If socket is create by AF_INET type, add IPv6 address to asoc will cause kernel panic while packet is transmitted on that transport. This patch add address type check before process paramaters of ASCONF chunk. If peer is not support this address type, return with error invald parameter. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/sctp/sm_make_chunk.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 69a464f1d2b..6eeee535e94 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2827,6 +2827,19 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
union sctp_addr addr;
union sctp_addr_param *addr_param;
+ switch (addr_param->v4.param_hdr.type) {
+ case SCTP_PARAM_IPV6_ADDRESS:
+ if (!asoc->peer.ipv6_address)
+ return SCTP_ERROR_INV_PARAM;
+ break;
+ case SCTP_PARAM_IPV4_ADDRESS:
+ if (!asoc->peer.ipv4_address)
+ return SCTP_ERROR_INV_PARAM;
+ break;
+ default:
+ return SCTP_ERROR_INV_PARAM;
+ }
+
addr_param = (union sctp_addr_param *)
((void *)asconf_param + sizeof(sctp_addip_param_t));