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-rw-r--r--net/sctp/sm_statefuns.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 385f1757158a..5e7fb0f54b88 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -2965,6 +2965,7 @@ sctp_disposition_t sctp_sf_tabort_8_4_8(const struct sctp_endpoint *ep,
SCTP_INC_STATS(SCTP_MIB_OUTCTRLCHUNKS);
+ sctp_sf_pdiscard(ep, asoc, type, arg, commands);
return SCTP_DISPOSITION_CONSUME;
}
@@ -3148,11 +3149,9 @@ sctp_disposition_t sctp_sf_ootb(const struct sctp_endpoint *ep,
} while (ch_end < skb_tail_pointer(skb));
if (ootb_shut_ack)
- sctp_sf_shut_8_4_5(ep, asoc, type, arg, commands);
+ return sctp_sf_shut_8_4_5(ep, asoc, type, arg, commands);
else
- sctp_sf_tabort_8_4_8(ep, asoc, type, arg, commands);
-
- return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
+ return sctp_sf_tabort_8_4_8(ep, asoc, type, arg, commands);
}
/*
@@ -3218,7 +3217,11 @@ static sctp_disposition_t sctp_sf_shut_8_4_5(const struct sctp_endpoint *ep,
if (!sctp_chunk_length_valid(chunk, sizeof(sctp_chunkhdr_t)))
return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
- return SCTP_DISPOSITION_CONSUME;
+ /* We need to discard the rest of the packet to prevent
+ * potential bomming attacks from additional bundled chunks.
+ * This is documented in SCTP Threats ID.
+ */
+ return sctp_sf_pdiscard(ep, asoc, type, arg, commands);
}
return SCTP_DISPOSITION_NOMEM;