Date: Sat, 4 May 2019 11:07:36 +0000 (UTC) From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r347103 - stable/12/sys/netinet Message-ID: <201905041107.x44B7aQT030106@repo.freebsd.org>
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Author: tuexen Date: Sat May 4 11:07:35 2019 New Revision: 347103 URL: https://svnweb.freebsd.org/changeset/base/347103 Log: MFC r344724: Allow SCTP stream reconfiguration operations only in ESTABLISHED state. This issue was found by running syzkaller. Modified: stable/12/sys/netinet/sctp_usrreq.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/netinet/sctp_usrreq.c ============================================================================== --- stable/12/sys/netinet/sctp_usrreq.c Sat May 4 11:05:57 2019 (r347102) +++ stable/12/sys/netinet/sctp_usrreq.c Sat May 4 11:07:35 2019 (r347103) @@ -4631,6 +4631,12 @@ sctp_setopt(struct socket *so, int optname, void *optv SCTP_TCB_UNLOCK(stcb); break; } + if (SCTP_GET_STATE(stcb) != SCTP_STATE_OPEN) { + SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); + error = EINVAL; + SCTP_TCB_UNLOCK(stcb); + break; + } if (sizeof(struct sctp_reset_streams) + strrst->srs_number_streams * sizeof(uint16_t) > optsize) { error = EINVAL; @@ -4745,6 +4751,12 @@ sctp_setopt(struct socket *so, int optname, void *optv SCTP_TCB_UNLOCK(stcb); break; } + if (SCTP_GET_STATE(stcb) != SCTP_STATE_OPEN) { + SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); + 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; @@ -4812,6 +4824,12 @@ sctp_setopt(struct socket *so, int optname, void *optv */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); error = EOPNOTSUPP; + SCTP_TCB_UNLOCK(stcb); + break; + } + if (SCTP_GET_STATE(stcb) != SCTP_STATE_OPEN) { + SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); + error = EINVAL; SCTP_TCB_UNLOCK(stcb); break; }
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