git: 83dcc7790b11 - main - sctp: don't provide uninitialized memory to process_chunk_drop()

[Michael Tuexen]

The branch main has been updated by tuexen:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=83dcc7790b11e605c32ec9a091c6bba3bc921083

commit 83dcc7790b11e605c32ec9a091c6bba3bc921083
Author:     Michael Tuexen <tue...@freebsd.org>
AuthorDate: 2024-05-08 22:17:13 +0000
Commit:     Michael Tuexen <tue...@freebsd.org>
CommitDate: 2024-05-08 22:17:13 +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
    MFC after:      3 days
---
 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);
                        }