From: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com
[ Upstream commit b6bcdf763db1f5ea602bf876cfe91debfb3c7773 ]
The V4L2 API defines the maximum value for an integer menu control as the number of elements minus one. The v4l2_ctrl_new_std_menu() validates this constraint with an off-by-one error. Fix it.
Fixes: d1e9b7c12b74 ("[media] V4L: Add support for integer menu controls with standard menu items") Signed-off-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com Reviewed-by: Sakari Ailus sakari.ailus@linux.intel.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/v4l2-core/v4l2-ctrls-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c index 45a76f40deeb..3798a57bbbd4 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-core.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c @@ -1456,7 +1456,7 @@ struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl, else if (type == V4L2_CTRL_TYPE_INTEGER_MENU) qmenu_int = v4l2_ctrl_get_int_menu(id, &qmenu_int_len);
- if ((!qmenu && !qmenu_int) || (qmenu_int && max > qmenu_int_len)) { + if ((!qmenu && !qmenu_int) || (qmenu_int && max >= qmenu_int_len)) { handler_set_err(hdl, -EINVAL); return NULL; }