Linux kernel staging patches
 help / color / Atom feed
* [PATCH] staging/most: Remove all strcpy() uses in favor of strscpy()
@ 2021-07-17 16:05 Len Baker
  0 siblings, 0 replies; only message in thread
From: Len Baker @ 2021-07-17 16:05 UTC (permalink / raw)
  To: Greg Kroah-Hartman
  Cc: Len Baker, Kumar Kartikeya Dwivedi, linux-staging, linux-kernel

strcpy() performs no bounds checking on the destination buffer. This
could result in linear overflows beyond the end of the buffer, leading
to all kinds of misbehaviors. The safe replacement is strscpy().

Signed-off-by: Len Baker <len.baker@gmx.com>
---
 drivers/staging/most/video/video.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/most/video/video.c b/drivers/staging/most/video/video.c
index 90933d78c332..b7858e47145f 100644
--- a/drivers/staging/most/video/video.c
+++ b/drivers/staging/most/video/video.c
@@ -258,7 +258,7 @@ static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
 	if (f->index)
 		return -EINVAL;

-	strcpy(f->description, "MPEG");
+	strscpy(f->description, "MPEG", sizeof(f->description));
 	f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 	f->flags = V4L2_FMT_FLAG_COMPRESSED;
 	f->pixelformat = V4L2_PIX_FMT_MPEG;
@@ -306,7 +306,7 @@ static int vidioc_enum_input(struct file *file, void *priv,
 	if (input->index >= V4L2_CMP_MAX_INPUT)
 		return -EINVAL;

-	strcpy(input->name, "MOST Video");
+	strscpy(input->name, "MOST Video", sizeof(input->name));
 	input->type |= V4L2_INPUT_TYPE_CAMERA;
 	input->audioset = 0;

--
2.25.1


^ permalink raw reply	[flat|nested] only message in thread

only message in thread, back to index

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-17 16:05 [PATCH] staging/most: Remove all strcpy() uses in favor of strscpy() Len Baker

Linux kernel staging patches

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-staging/0 linux-staging/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-staging linux-staging/ https://lore.kernel.org/linux-staging \
		linux-staging@lists.linux.dev
	public-inbox-index linux-staging

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/dev.linux.lists.linux-staging


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git