Unverified Commit 121dd6cf authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!12750 usb: gadget: uvc: Prevent buffer overflow in setup handler 

Merge Pull Request from: @ci-robot 
 
PR sync from: Wenyu Huang <huangwenyu5@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/2JTY7D27DA5Y4LYMXTMCRR4V3WHCCYDZ/ 
 
https://gitee.com/src-openeuler/kernel/issues/IAYRED 
 
Link:https://gitee.com/openeuler/kernel/pulls/12750

 

Reviewed-by: default avatarZucheng Zheng <zhengzucheng@huawei.com>
Signed-off-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
parents efb184be 011e0ac9

drivers/usb/gadget/function/f_uvc.c

+3 −2
Original line number Diff line number Diff line
@@ -219,8 +219,9 @@ uvc_function_ep0_complete(struct usb_ep *ep, struct usb_request *req) 


		memset(&v4l2_event, 0, sizeof(v4l2_event));

		v4l2_event.type = UVC_EVENT_DATA;

		uvc_event->data.length = req->actual;

		memcpy(&uvc_event->data.data, req->buf, req->actual);

		uvc_event->data.length = min_t(unsigned int, req->actual,

			sizeof(uvc_event->data.data));

		memcpy(&uvc_event->data.data, req->buf, uvc_event->data.length);

		v4l2_event_queue(&uvc->vdev, &v4l2_event);

	}

}