This is a note to let you know that I've just added the patch titled
eCryptfs: Remove buggy and unnecessary write in file name decode routine
to the 3.18-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:
ecryptfs-remove-buggy-and-unnecessary-write-in-file-name-decode-routine.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 942080643bce061c3dd9d5718d3b745dcb39a8bc Mon Sep 17 00:00:00 2001
From: Michael Halcrow <mhalcrow@xxxxxxxxxx>
Date: Wed, 26 Nov 2014 09:09:16 -0800
Subject: eCryptfs: Remove buggy and unnecessary write in file name decode routine
From: Michael Halcrow <mhalcrow@xxxxxxxxxx>
commit 942080643bce061c3dd9d5718d3b745dcb39a8bc upstream.
Dmitry Chernenkov used KASAN to discover that eCryptfs writes past the
end of the allocated buffer during encrypted filename decoding. This
fix corrects the issue by getting rid of the unnecessary 0 write when
the current bit offset is 2.
Signed-off-by: Michael Halcrow <mhalcrow@xxxxxxxxxx>
Reported-by: Dmitry Chernenkov <dmitryc@xxxxxxxxxx>
Suggested-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Tyler Hicks <tyhicks@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ecryptfs/crypto.c | 1 -
1 file changed, 1 deletion(-)
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -1917,7 +1917,6 @@ ecryptfs_decode_from_filename(unsigned c
break;
case 2:
dst[dst_byte_offset++] |= (src_byte);
- dst[dst_byte_offset] = 0;
current_bit_offset = 0;
break;
}
Patches currently in stable-queue which might be from mhalcrow@xxxxxxxxxx are
queue-3.18/ecryptfs-remove-buggy-and-unnecessary-write-in-file-name-decode-routine.patch
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