Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.15 009/171] HID: bigbenff: prevent null pointer dereference | Date | Mon, 13 Dec 2021 10:28:44 +0100 |
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From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
commit 918aa1ef104d286d16b9e7ef139a463ac7a296f0 upstream.
When emulating the device through uhid, there is a chance we don't have output reports and so report_field is null.
Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20211202095334.14399-3-benjamin.tissoires@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/hid/hid-bigbenff.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hid/hid-bigbenff.c +++ b/drivers/hid/hid-bigbenff.c @@ -191,7 +191,7 @@ static void bigben_worker(struct work_st struct bigben_device, worker); struct hid_field *report_field = bigben->report->field[0]; - if (bigben->removed) + if (bigben->removed || !report_field) return; if (bigben->work_led) {
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