This patch fix to check the unrecognized ASCONF parameter before
access it.
Signed-off-by: Wei Yongjun <yjwei@xxxxxxxxxxxxxx>
---
net/sctp/sm_make_chunk.c | 8 +++++---
1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index b7acc9c..3d867ce 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -2861,6 +2861,11 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
addr_param = (union sctp_addr_param *)
((void *)asconf_param + sizeof(sctp_addip_param_t));
+ if (asconf_param->param_hdr.type != SCTP_PARAM_ADD_IP &&
+ asconf_param->param_hdr.type != SCTP_PARAM_DEL_IP &&
+ asconf_param->param_hdr.type != SCTP_PARAM_SET_PRIMARY)
+ return SCTP_ERROR_UNKNOWN_PARAM;
+
switch (addr_param->v4.param_hdr.type) {
case SCTP_PARAM_IPV6_ADDRESS:
if (!asoc->peer.ipv6_address)
@@ -2958,9 +2963,6 @@ static __be16 sctp_process_asconf_param(struct sctp_association *asoc,
sctp_assoc_set_primary(asoc, peer);
break;
- default:
- return SCTP_ERROR_UNKNOWN_PARAM;
- break;
}
return SCTP_ERROR_NO_ERROR;
--
1.6.2.2
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