linux/drivers/infiniband
Bart Van Assche 7f25f296fc RDMA/iwcm: Fix a use-after-free related to destroying CM IDs
commit aee2424246 upstream.

iw_conn_req_handler() associates a new struct rdma_id_private (conn_id) with
an existing struct iw_cm_id (cm_id) as follows:

        conn_id->cm_id.iw = cm_id;
        cm_id->context = conn_id;
        cm_id->cm_handler = cma_iw_handler;

rdma_destroy_id() frees both the cm_id and the struct rdma_id_private. Make
sure that cm_work_handler() does not trigger a use-after-free by only
freeing of the struct rdma_id_private after all pending work has finished.

Cc: stable@vger.kernel.org
Fixes: 59c68ac31e ("iw_cm: free cm_id resources on the last deref")
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240605145117.397751-6-bvanassche@acm.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-08-19 05:33:39 +02:00
..
core RDMA/iwcm: Fix a use-after-free related to destroying CM IDs 2024-08-19 05:33:39 +02:00
hw bnxt_re: Fix imm_data endianness 2024-08-19 05:33:34 +02:00
sw RDMA/rxe: Don't set BTH_ACK_MASK for UC or UD QPs 2024-08-19 05:33:33 +02:00
ulp RDMA/IPoIB: Fix format truncation compilation errors 2024-06-16 13:28:40 +02:00
Kconfig RMDA/sw: Don't allow drivers using dma_virt_ops on highmem configs 2020-11-24 13:29:05 +01:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00