Date: Sun, 6 Jun 2021 23:45:20 GMT From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 399798c97b03 - stable/13 - sctp: improve consistency when handling chunks of wrong size Message-ID: <202106062345.156NjKLQ092431@gitrepo.freebsd.org>
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The branch stable/13 has been updated by tuexen: URL: https://cgit.FreeBSD.org/src/commit/?id=399798c97b031b10499b27ad4c0cff668521b42c commit 399798c97b031b10499b27ad4c0cff668521b42c Author: Michael Tuexen <tuexen@FreeBSD.org> AuthorDate: 2021-05-05 23:02:41 +0000 Commit: Michael Tuexen <tuexen@FreeBSD.org> CommitDate: 2021-06-02 21:56:57 +0000 sctp: improve consistency when handling chunks of wrong size (cherry picked from commit d1cb8d11b0c09c35b87c144bab7b02b75c5725b6) --- sys/netinet/sctp_input.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/sys/netinet/sctp_input.c b/sys/netinet/sctp_input.c index e1f096ea5817..050f30d145b7 100644 --- a/sys/netinet/sctp_input.c +++ b/sys/netinet/sctp_input.c @@ -4840,11 +4840,12 @@ process_control_chunks: break; case SCTP_SHUTDOWN_ACK: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_SHUTDOWN_ACK, stcb %p\n", (void *)stcb); - if ((stcb != NULL) && (netp != NULL) && (*netp != NULL)) { + if ((chk_length == sizeof(struct sctp_shutdown_ack_chunk)) && + (stcb != NULL) && (netp != NULL) && (*netp != NULL)) { sctp_handle_shutdown_ack((struct sctp_shutdown_ack_chunk *)ch, stcb, *netp); + *offset = length; + return (NULL); } - *offset = length; - return (NULL); break; case SCTP_OPERATION_ERROR: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_OP_ERR\n"); @@ -5032,12 +5033,13 @@ process_control_chunks: *offset = length; return (stcb); } - if ((stcb != NULL) && (netp != NULL) && (*netp != NULL)) { + if ((chk_length == sizeof(struct sctp_shutdown_complete_chunk)) && + (stcb != NULL) && (netp != NULL) && (*netp != NULL)) { sctp_handle_shutdown_complete((struct sctp_shutdown_complete_chunk *)ch, stcb, *netp); + *offset = length; + return (NULL); } - *offset = length; - return (NULL); break; case SCTP_ASCONF: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_ASCONF\n");
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