diff --git a/net/sctp/chunk.c b/net/sctp/chunk.c
index 9213805b558d6f7db08bfb8837319ee16c12986d..7f8baa48e7c2a834aea292106fd319c2489432a3 100644
--- a/net/sctp/chunk.c
+++ b/net/sctp/chunk.c
@@ -308,6 +308,10 @@ int sctp_chunk_abandoned(struct sctp_chunk *chunk)
 	if (chunk->msg->abandoned)
 		return 1;
 
+	if (!chunk->has_tsn &&
+	    !(chunk->chunk_hdr->flags & SCTP_DATA_FIRST_FRAG))
+		return 0;
+
 	if (SCTP_PR_TTL_ENABLED(chunk->sinfo.sinfo_flags) &&
 	    time_after(jiffies, chunk->msg->expires_at)) {
 		struct sctp_stream_out *streamout =
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index 4ab164b5aad0de199a3b862f3894309531d7a338..7d67feeeffc1e758ae4be4ef1ddaea23276d1f5e 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -407,7 +407,8 @@ static int sctp_prsctp_prune_unsent(struct sctp_association *asoc,
 
 	list_for_each_entry_safe(chk, temp, &q->out_chunk_list, list) {
 		if (!chk->msg->abandoned &&
-		    (!SCTP_PR_PRIO_ENABLED(chk->sinfo.sinfo_flags) ||
+		    (!(chk->chunk_hdr->flags & SCTP_DATA_FIRST_FRAG) ||
+		     !SCTP_PR_PRIO_ENABLED(chk->sinfo.sinfo_flags) ||
 		     chk->sinfo.sinfo_timetolive <= sinfo->sinfo_timetolive))
 			continue;