The branch stable/13 has been updated by tuexen:
URL:
https://cgit.FreeBSD.org/src/commit/?id=24df96b642531eb62572599d28f932590be9ba20
commit 24df96b642531eb62572599d28f932590be9ba20
Author: Michael Tuexen <tue...@freebsd.org>
AuthorDate: 2021-06-27 14:10:39 +0000
Commit: Michael Tuexen <tue...@freebsd.org>
CommitDate: 2021-07-13 18:27:58 +0000
sctp: Fix length check for ECNE chunks
(cherry picked from commit 6587a2bd1e88b5b99aea114e3d20b0d4c48c95df)
---
sys/netinet/sctp_input.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/sys/netinet/sctp_input.c b/sys/netinet/sctp_input.c
index 442e58afd0ff..b822c9eae2ca 100644
--- a/sys/netinet/sctp_input.c
+++ b/sys/netinet/sctp_input.c
@@ -2887,10 +2887,6 @@ sctp_handle_ecn_echo(struct sctp_ecne_chunk *cp,
unsigned int pkt_cnt;
len = ntohs(cp->ch.chunk_length);
- if ((len != sizeof(struct sctp_ecne_chunk)) &&
- (len != sizeof(struct old_sctp_ecne_chunk))) {
- return;
- }
if (len == sizeof(struct old_sctp_ecne_chunk)) {
/* Its the old format */
memcpy(&bkup, cp, sizeof(struct old_sctp_ecne_chunk));
@@ -5022,7 +5018,8 @@ process_control_chunks:
if (stcb->asoc.ecn_supported == 0) {
goto unknown_chunk;
}
- if (chk_length != sizeof(struct sctp_ecne_chunk)) {
+ if ((chk_length != sizeof(struct sctp_ecne_chunk)) &&
+ (chk_length != sizeof(struct old_sctp_ecne_chunk)))
{
break;
}
sctp_handle_ecn_echo((struct sctp_ecne_chunk *)ch,
stcb);
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