From: Daniel Jurgens danielj@mellanox.com
commit d60667fc398ed34b3c7456b020481c55c760e503 upstream.
If the notifier runs after the security context is freed an access of freed memory can occur.
Fixes: 47a2b338fe63 ("IB/core: Enforce security on management datagrams") Signed-off-by: Daniel Jurgens danielj@mellanox.com Reviewed-by: Parav Pandit parav@mellanox.com Signed-off-by: Leon Romanovsky leonro@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/infiniband/core/security.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/infiniband/core/security.c +++ b/drivers/infiniband/core/security.c @@ -732,9 +732,10 @@ void ib_mad_agent_security_cleanup(struc if (!rdma_protocol_ib(agent->device, agent->port_num)) return;
- security_ib_free_security(agent->security); if (agent->lsm_nb_reg) unregister_lsm_notifier(&agent->lsm_nb); + + security_ib_free_security(agent->security); }
int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index)