git: 5678f3b366c2 - stable/14 - sctp: don't provide uninitialized memory to process_chunk_drop()

The branch stable/14 has been updated by tuexen:

URL: https://cgit.FreeBSD.org/src/commit/?id=5678f3b366c28c6828d32bd758fda4d6b965aebf

commit 5678f3b366c28c6828d32bd758fda4d6b965aebf
Author:     Michael Tuexen <tuexen@FreeBSD.org>
AuthorDate: 2024-05-08 22:17:13 +0000
Commit:     Michael Tuexen <tuexen@FreeBSD.org>
CommitDate: 2024-08-03 22:23:37 +0000

    sctp: don't provide uninitialized memory to process_chunk_drop()
    
    Right now, the code in process_chunk_drop() does not look the
    the corresponding fields.
    Therefore, no functional change intended.
    
    Reported by:    Coverity Scan
    CID:            1472476
    
    (cherry picked from commit 83dcc7790b11e605c32ec9a091c6bba3bc921083)
---
 sys/netinet/sctp_input.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/netinet/sctp_input.c b/sys/netinet/sctp_input.c
index a55ef5ac1eab..0a8372a07362 100644
--- a/sys/netinet/sctp_input.c
+++ b/sys/netinet/sctp_input.c
@@ -4231,6 +4231,8 @@ sctp_handle_packet_dropped(struct sctp_pktdrop_chunk *cp,
 				SCTP_STAT_INCR(sctps_pdrpmbda);
 			}
 		} else {
+			desc.tsn_ifany = htonl(0);
+			memset(desc.data_bytes, 0, SCTP_NUM_DB_TO_VERIFY);
 			if (pktdrp_flags & SCTP_FROM_MIDDLE_BOX) {
 				SCTP_STAT_INCR(sctps_pdrpmbct);
 			}