This is a note to let you know that I've just added the patch titled dm crypt: use memzero_explicit for on-stack buffer to the 3.17-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: dm-crypt-use-memzero_explicit-for-on-stack-buffer.patch and it can be found in the queue-3.17 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 1a71d6ffe18c0d0f03fc8531949cc8ed41d702ee Mon Sep 17 00:00:00 2001 From: Milan Broz <gmazyland@xxxxxxxxx> Date: Sat, 22 Nov 2014 09:36:04 +0100 Subject: dm crypt: use memzero_explicit for on-stack buffer From: Milan Broz <gmazyland@xxxxxxxxx> commit 1a71d6ffe18c0d0f03fc8531949cc8ed41d702ee upstream. Use memzero_explicit to cleanup sensitive data allocated on stack to prevent the compiler from optimizing and removing memset() calls. Signed-off-by: Milan Broz <gmazyland@xxxxxxxxx> Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/md/dm-crypt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -711,7 +711,7 @@ static int crypt_iv_tcw_whitening(struct for (i = 0; i < ((1 << SECTOR_SHIFT) / 8); i++) crypto_xor(data + i * 8, buf, 8); out: - memset(buf, 0, sizeof(buf)); + memzero_explicit(buf, sizeof(buf)); return r; } Patches currently in stable-queue which might be from gmazyland@xxxxxxxxx are queue-3.17/dm-crypt-use-memzero_explicit-for-on-stack-buffer.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html