This is a note to let you know that I've just added the patch titled
ihex: Check if zero-length record is at the end of the blob
to my driver-core git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
in the driver-core-testing branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will be merged to the driver-core-next branch sometime soon,
after it passes testing, and the merge window is open.
If you have any questions about this process, please let me know.
>From 5158c36ec9d0b3343f58987cec7ebfd866331fd0 Mon Sep 17 00:00:00 2001
From: Andrey Smirnov <andrew.smir...@gmail.com>
Date: Thu, 20 Dec 2018 23:28:38 -0800
Subject: ihex: Check if zero-length record is at the end of the blob
When verifying the validity of IHEX file we need to make sure that
zero-length record we found is located at the end of the file. Not
doing that could result in an invalid file with a bogus zero-length in
the middle short-circuiting the check and being reported as valid.
Cc: Chris Healy <cphe...@gmail.com>
Cc: Kyle McMartin <k...@kernel.org>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Masahiro Yamada <yamada.masah...@socionext.com>
Cc: David Woodhouse <dw...@infradead.org>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
include/linux/ihex.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/ihex.h b/include/linux/ihex.h
index 9c701521176b..9130f307a420 100644
--- a/include/linux/ihex.h
+++ b/include/linux/ihex.h
@@ -49,7 +49,7 @@ static inline int ihex_validate_fw(const struct firmware *fw)
for (; rec <= end; rec = __ihex_next_binrec(rec)) {
/* Zero length marks end of records */
- if (!be16_to_cpu(rec->len))
+ if (rec == end && !be16_to_cpu(rec->len))
return 0;
}
return -EINVAL;
--
2.20.1
