[SCTP]: Fix kernel panic while received AUTH chunk while enabled auth
If STCP is started while /proc/sys/net/sctp/auth_enable is set 0 and association is established between endpoints. Then if /proc/sys/net/sctp/auth_enable is set 1, a received AUTH chunk will cause kernel panic. Test as following: step 1: echo 0> /proc/sys/net/sctp/auth_enable step 2: SCTP client SCTP server INIT ---------> <--------- INIT-ACK COOKIE-ECHO ---------> <--------- COOKIE-ACK step 3: echo 1> /proc/sys/net/sctp/auth_enable step 4: SCTP client SCTP server AUTH -----------> Kernel Panic This patch fix this probleam to treat AUTH chunk as unknow chunk if peer has initialized with no auth capable. > Sorry for the delay. Was on vacation without net access. > > Wei Yongjun wrote: >> >> >> This patch fix this probleam to treat AUTH chunk as unknow chunk if >> peer has initialized with no auth capable. >> >> Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> > > Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com> > >> Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
b9c4d82a85
commit
d2f19fa13e
|
@ -3865,6 +3865,10 @@ sctp_disposition_t sctp_sf_eat_auth(const struct sctp_endpoint *ep,
|
|||
struct sctp_chunk *err_chunk;
|
||||
sctp_ierror_t error;
|
||||
|
||||
/* Make sure that the peer has AUTH capable */
|
||||
if (!asoc->peer.auth_capable)
|
||||
return sctp_sf_unk_chunk(ep, asoc, type, arg, commands);
|
||||
|
||||
if (!sctp_vtag_verify(chunk, asoc)) {
|
||||
sctp_add_cmd_sf(commands, SCTP_CMD_REPORT_BAD_TAG,
|
||||
SCTP_NULL());
|
||||
|
|
Loading…
Reference in a new issue