Similar to commit<ea72fbf588ac>("media: v4l2-compat-ioctl32: prevent go past
max size"} ,add max size check for count variable.
Signed-off-by: Defang Bo <[email protected]>
---
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index a99e82e..5041d60 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -207,7 +207,7 @@ static int put_v4l2_window32(struct v4l2_window __user *p64,
get_user(clipcount, &p64->clipcount) ||
put_user(clipcount, &p32->clipcount))
return -EFAULT;
- if (!clipcount)
+ if (!clipcount || count > (U32_MAX/sizeof(*uclips)))
return 0;
if (get_user(kclips, &p64->clips))
--
1.9.1
