sctp: discard ABORT chunk with zero verification tag in COOKIE-WAIT state
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>
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@ -437,7 +437,7 @@ sctp_vtag_verify_either(const struct sctp_chunk *chunk,
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*/
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if ((!sctp_test_T_bit(chunk) &&
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(ntohl(chunk->sctp_hdr->vtag) == asoc->c.my_vtag)) ||
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(sctp_test_T_bit(chunk) &&
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(sctp_test_T_bit(chunk) && asoc->c.peer_vtag &&
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(ntohl(chunk->sctp_hdr->vtag) == asoc->c.peer_vtag))) {
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return 1;
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}
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