This is a note to let you know that I've just added the patch titled
[media] digitv: limit messages to buffer size
to the 4.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
digitv-limit-messages-to-buffer-size.patch
and it can be found in the queue-4.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 821117dc21083a99dd99174c10848d70ff43de29 Mon Sep 17 00:00:00 2001
From: Alyssa Milburn <amilburn@xxxxxxxx>
Date: Sat, 1 Apr 2017 14:33:42 -0300
Subject: [media] digitv: limit messages to buffer size
From: Alyssa Milburn <amilburn@xxxxxxxx>
commit 821117dc21083a99dd99174c10848d70ff43de29 upstream.
Return an error rather than memcpy()ing beyond the end of the buffer.
Internal callers use appropriate sizes, but digitv_i2c_xfer may not.
Signed-off-by: Alyssa Milburn <amilburn@xxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/usb/dvb-usb/digitv.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/media/usb/dvb-usb/digitv.c
+++ b/drivers/media/usb/dvb-usb/digitv.c
@@ -33,6 +33,9 @@ static int digitv_ctrl_msg(struct dvb_us
wo = (rbuf == NULL || rlen == 0); /* write-only */
+ if (wlen > 4 || rlen > 4)
+ return -EIO;
+
memset(st->sndbuf, 0, 7);
memset(st->rcvbuf, 0, 7);
Patches currently in stable-queue which might be from amilburn@xxxxxxxx are
queue-4.11/digitv-limit-messages-to-buffer-size.patch
queue-4.11/ttusb2-limit-messages-to-buffer-size.patch
queue-4.11/zr364xx-enforce-minimum-size-when-reading-header.patch
queue-4.11/dw2102-limit-messages-to-buffer-size.patch