diff options
| author | Xin Long <[email protected]> | 2018-04-26 15:21:44 +0800 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2018-04-27 13:34:34 -0400 |
| commit | 6a9a27d5397fc6c52f90c09ddab91e65053584aa (patch) | |
| tree | a72c1b77d12c5a5257b3d21276d84e3873325f86 | |
| parent | 9306b38e42cb266f98bff6f6f4c1c652aa79ba45 (diff) | |
sctp: clear the new asoc's stream outcnt in sctp_stream_update
When processing a duplicate cookie-echo chunk, sctp moves the new
temp asoc's stream out/in into the old asoc, and later frees this
new temp asoc.
But now after this move, the new temp asoc's stream->outcnt is not
cleared while stream->out is set to NULL, which would cause a same
crash as the one fixed in Commit 79d0895140e9 ("sctp: fix error
path in sctp_stream_init") when freeing this asoc later.
This fix is to clear this outcnt in sctp_stream_update.
Fixes: f952be79cebd ("sctp: introduce struct sctp_stream_out_ext")
Reported-by: Jianwen Ji <[email protected]>
Signed-off-by: Xin Long <[email protected]>
Acked-by: Neil Horman <[email protected]>
Acked-by: Marcelo Ricardo Leitner <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
| -rw-r--r-- | net/sctp/stream.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/sctp/stream.c b/net/sctp/stream.c index f799043abec9..f1f1d1b232ba 100644 --- a/net/sctp/stream.c +++ b/net/sctp/stream.c @@ -240,6 +240,8 @@ void sctp_stream_update(struct sctp_stream *stream, struct sctp_stream *new) new->out = NULL; new->in = NULL; + new->outcnt = 0; + new->incnt = 0; } static int sctp_send_reconf(struct sctp_association *asoc, |