The 'sched' index value must be checked before accessing an element
of the 'sctp_sched_ops' array. Otherwise, it can lead to OOB access.
Note that it's harmless since the 'sched' parameter is checked before
calling 'sctp_sched_set_sched'.
Found by InfoTeCS on behalf of Linux Verification Center
(linuxtesting.org) with SVACE.
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Ilia.Gavrilov <Ilia.Gavrilov@infotecs.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
int sctp_sched_set_sched(struct sctp_association *asoc,
enum sctp_sched_type sched)
{
- struct sctp_sched_ops *n = sctp_sched_ops[sched];
struct sctp_sched_ops *old = asoc->outqueue.sched;
struct sctp_datamsg *msg = NULL;
+ struct sctp_sched_ops *n;
struct sctp_chunk *ch;
int i, ret = 0;
- if (old == n)
- return ret;
-
if (sched > SCTP_SS_MAX)
return -EINVAL;
+ n = sctp_sched_ops[sched];
+ if (old == n)
+ return ret;
+
if (old)
sctp_sched_free_sched(&asoc->stream);