linux/drivers/nvme
Maurizio Lombardi ea8e356acb nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
Currently, when nvmet_tcp_build_pdu_iovec() detects an out-of-bounds
PDU length or offset, it triggers nvmet_tcp_fatal_error(cmd->queue)
and returns early. However, because the function returns void, the
callers are entirely unaware that a fatal error has occurred and
that the cmd->recv_msg.msg_iter was left uninitialized.

Callers such as nvmet_tcp_handle_h2c_data_pdu() proceed to blindly
overwrite the queue state with queue->rcv_state = NVMET_TCP_RECV_DATA
Consequently, the socket receiving loop may attempt to read incoming
network data into the uninitialized iterator.

Fix this by shifting the error handling responsibility to the callers.

Fixes: 52a0a98549 ("nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec")
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Yunje Shin <ioerts@kookmin.ac.kr>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
History 2026-04-08 12:05:00 -07:00
..
common nvme-auth: common: remove selections of no-longer used crypto modules 2026-03-27 07:35:03 -07:00
host nvme: enable PCI P2PDMA support for RDMA transport 2026-04-08 08:25:51 -07:00
target nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers 2026-04-08 12:05:00 -07:00
Kconfig nvme: implement In-Band authentication 2022-08-02 17:14:49 -06:00
Makefile nvme: common: make keyring and auth separate modules 2023-11-07 10:05:15 -08:00