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media: uvcvideo: Add sanity check to uvc_ioctl_xu_ctrl_map

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Do not process unknown data types.

Tested-by: Yunke Cao <yunkec@google.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://lore.kernel.org/r/20250203-uvc-roi-v17-15-5900a9fed613@chromium.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
This commit is contained in:
Ricardo Ribalda
2025-02-03 11:55:51 +00:00
committed by Hans Verkuil
parent dc6d7e050c
commit 990262fdfc
1 changed files with 6 additions and 0 deletions
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drivers/media/usb/uvc/uvc_v4l2.c
+6
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@@ -108,6 +108,12 @@ static int uvc_ioctl_xu_ctrl_map(struct uvc_video_chain *chain,
struct uvc_control_mapping *map;
int ret;
if (xmap->data_type > UVC_CTRL_DATA_TYPE_BITMASK) {
uvc_dbg(chain->dev, CONTROL,
"Unsupported UVC data type %u\n", xmap->data_type);
return -EINVAL;
}
map = kzalloc(sizeof(*map), GFP_KERNEL);
if (map == NULL)
return -ENOMEM;