Commit ebf28551 authored Sep 06, 2017 by Surajit Podder Committed by TARKZiM Jul 31, 2020

media: v4l2-compat-ioctl32: memset stack union in compat ioctl



memset karg in do_video_ioctl to ensure that stack memory is
not copied to user memory.

Change-Id: Ib892f8cabff1e0076c670496ee6353d00afdf85e
Signed-off-by: Surajit Podder <spodder@codeaurora.org>
Signed-off-by: Sanjay Singh <sisanj@codeaurora.org>

parent 263e794b

drivers/media/v4l2-core/v4l2-compat-ioctl32.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -847,6 +847,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar
		int compatible_arg = 1;
		long err = 0;

		memset(&karg, 0, sizeof(karg));
		/* First, convert the command. */
		switch (cmd) {
		case VIDIOC_G_FMT32: cmd = VIDIOC_G_FMT; break;