sctp: check parameter value of length in ERROR chunk
When an endpoint receives ERROR that parameter value is invalid, send an ABORT to peer with a Protocol Violation error code. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -3204,6 +3204,7 @@ sctp_disposition_t sctp_sf_operr_notify(const struct sctp_endpoint *ep,
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sctp_cmd_seq_t *commands)
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{
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struct sctp_chunk *chunk = arg;
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sctp_errhdr_t *err;
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if (!sctp_vtag_verify(chunk, asoc))
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return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
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@ -3212,6 +3213,10 @@ sctp_disposition_t sctp_sf_operr_notify(const struct sctp_endpoint *ep,
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if (!sctp_chunk_length_valid(chunk, sizeof(sctp_operr_chunk_t)))
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return sctp_sf_violation_chunklen(ep, asoc, type, arg,
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commands);
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sctp_walk_errors(err, chunk->chunk_hdr);
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if ((void *)err != (void *)chunk->chunk_end)
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return sctp_sf_violation_paramlen(ep, asoc, type, arg,
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(void *)err, commands);
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sctp_add_cmd_sf(commands, SCTP_CMD_PROCESS_OPERR,
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SCTP_CHUNK(chunk));
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