linux/drivers/bus/mhi/core
Bhaumik Bhatt 546362a9ef bus: mhi: core: Validate channel ID when processing command completions
MHI reads the channel ID from the event ring element sent by the
device which can be any value between 0 and 255. In order to
prevent any out of bound accesses, add a check against the maximum
number of channels supported by the controller and those channels
not configured yet so as to skip processing of that event ring
element.

Link: https://lore.kernel.org/r/1624558141-11045-1-git-send-email-bbhatt@codeaurora.org
Fixes: 1d3173a3ba ("bus: mhi: core: Add support for processing events from client device")
Cc: stable@vger.kernel.org #5.10
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210716075106.49938-3-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-21 13:16:18 +02:00
..
boot.c bus: mhi: core: Wait for MHI READY state in most scenarios 2021-03-31 16:51:43 +05:30
debugfs.c bus: mhi: core: Rename debugfs directory name 2021-03-10 20:11:22 +05:30
init.c bus: mhi: core: Clear configuration from channel context during reset 2021-04-07 12:25:42 +05:30
internal.h bus: mhi: core: Improvements to the channel handling state machine 2021-04-07 12:25:42 +05:30
main.c bus: mhi: core: Validate channel ID when processing command completions 2021-07-21 13:16:18 +02:00
Makefile bus: mhi: core: Fix the building of MHI module 2020-10-02 11:33:47 +02:00
pm.c bus: mhi: Wait for M2 state during system resume 2021-06-24 15:51:54 +02:00