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    Subject[PATCH 05/24] Staging: hv: mousevsc: Handle the case where we may get bogus report desc size
    Date
    Handle the case where we may get bogus report desc size from the host.

    Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
    Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
    ---
    drivers/staging/hv/hv_mouse.c | 2 ++
    1 files changed, 2 insertions(+), 0 deletions(-)

    diff --git a/drivers/staging/hv/hv_mouse.c b/drivers/staging/hv/hv_mouse.c
    index b7cc164..19cfc23 100644
    --- a/drivers/staging/hv/hv_mouse.c
    +++ b/drivers/staging/hv/hv_mouse.c
    @@ -341,6 +341,8 @@ static void mousevsc_on_receive_device_info(struct mousevsc_dev *input_device,

    /* Save the report desc */
    input_device->report_desc_size = desc->desc[0].wDescriptorLength;
    + if (input_device->report_desc_size == 0)
    + goto cleanup;
    input_device->report_desc = kzalloc(input_device->report_desc_size,
    GFP_ATOMIC);

    --
    1.7.4.1


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