Author: tuexen
Date: Fri Mar 9 13:12:33 2012
New Revision: 232723
URL: http://svn.freebsd.org/changeset/base/232723
Log:
Fix a bug reported by Peter Holm which results in a crash:
Verify in sctp_peeloff() that the socket is a one-to-many
style SCTP socket.
MFC after: 3 days.
Modified:
head/sys/netinet/sctp_peeloff.c
Modified: head/sys/netinet/sctp_peeloff.c
==============================================================================
--- head/sys/netinet/sctp_peeloff.c Fri Mar 9 13:06:24 2012
(r232722)
+++ head/sys/netinet/sctp_peeloff.c Fri Mar 9 13:12:33 2012
(r232723)
@@ -55,6 +55,15 @@ sctp_can_peel_off(struct socket *head, s
struct sctp_tcb *stcb;
uint32_t state;
+ if (head == NULL) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PEELOFF,
EBADF);
+ return (EBADF);
+ }
+ if ((head->so_proto->pr_protocol != IPPROTO_SCTP) ||
+ (head->so_type != SOCK_SEQPACKET)) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PEELOFF,
EOPNOTSUPP);
+ return (EOPNOTSUPP);
+ }
inp = (struct sctp_inpcb *)head->so_pcb;
if (inp == NULL) {
SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PEELOFF,
EFAULT);
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