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| author | tuexen <tuexen@FreeBSD.org> | 2014-10-12 17:39:37 +0000 |
|---|---|---|
| committer | tuexen <tuexen@FreeBSD.org> | 2014-10-12 17:39:37 +0000 |
| commit | 85569fa02c3eacfedb0cf0a7c4a912fd9895d3b2 (patch) | |
| tree | 69a739bafd1e496772fa261e457073c5841b9892 | |
| parent | 4f377875d1bf95ab3bfcd38b7f1620a2f9d0d144 (diff) | |
| download | FreeBSD-src-85569fa02c3eacfedb0cf0a7c4a912fd9895d3b2.zip FreeBSD-src-85569fa02c3eacfedb0cf0a7c4a912fd9895d3b2.tar.gz | |
MFC r272750:
Ensure that the number of stream reported in srs_number_streams is
consistent with the amount of data provided in the SCTP_RESET_STREAMS
socket option.
Thanks to Peter Bostroem from Google for drawing my attention to
this part of the code.
| -rw-r--r-- | sys/netinet/sctp_usrreq.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/netinet/sctp_usrreq.c b/sys/netinet/sctp_usrreq.c index e1fa351..e1ad178 100644 --- a/sys/netinet/sctp_usrreq.c +++ b/sys/netinet/sctp_usrreq.c @@ -4431,6 +4431,12 @@ sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, SCTP_TCB_UNLOCK(stcb); break; } + if (sizeof(struct sctp_reset_streams) + + strrst->srs_number_streams * sizeof(uint16_t) > optsize) { + error = EINVAL; + SCTP_TCB_UNLOCK(stcb); + break; + } if (stcb->asoc.stream_reset_outstanding) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY); error = EALREADY; |
