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sctp: discard ABORT chunk with zero verification tag in COOKIE-WAIT state

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In current implementation if ABORT chunk is received with T flag is set
and zero verification tag in COOKIE-WAIT state, the ABORT chunk will be
always accepted. This is because in COOKIE-WAIT state, the endpoint does
not know the peer's verification tag, and it's zero in the endpoint.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
This commit is contained in:
Wei Yongjun
2010-04-30 21:42:44 -04:00
committed by Vlad Yasevich
parent bd69b981a3
commit 52688d6ec9
1 changed files with 1 additions and 1 deletions
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2
include/net/sctp/sm.h
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@@ -437,7 +437,7 @@ sctp_vtag_verify_either(const struct sctp_chunk *chunk,
*/ */
if ((!sctp_test_T_bit(chunk) && if ((!sctp_test_T_bit(chunk) &&
(ntohl(chunk->sctp_hdr->vtag) == asoc->c.my_vtag)) || (ntohl(chunk->sctp_hdr->vtag) == asoc->c.my_vtag)) ||
(sctp_test_T_bit(chunk) && (sctp_test_T_bit(chunk) && asoc->c.peer_vtag &&
(ntohl(chunk->sctp_hdr->vtag) == asoc->c.peer_vtag))) { (ntohl(chunk->sctp_hdr->vtag) == asoc->c.peer_vtag))) {
return 1; return 1;
} }