This is a note to let you know that I've just added the patch titled dm crypt: rewrite (wipe) key in crypto layer using random data to the 4.10-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-rewrite-wipe-key-in-crypto-layer-using-random-data.patch and it can be found in the queue-4.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From c82feeec9a014b72c4ffea36648cfb6f81cc1b73 Mon Sep 17 00:00:00 2001 From: Ondrej Kozina <okozina@xxxxxxxxxx> Date: Mon, 24 Apr 2017 14:21:53 +0200 Subject: dm crypt: rewrite (wipe) key in crypto layer using random data From: Ondrej Kozina <okozina@xxxxxxxxxx> commit c82feeec9a014b72c4ffea36648cfb6f81cc1b73 upstream. The message "key wipe" used to wipe real key stored in crypto layer by rewriting it with zeroes. Since commit 28856a9 ("crypto: xts - consolidate sanity check for keys") this no longer works in FIPS mode for XTS. While running in FIPS mode the crypto key part has to differ from the tweak key. Fixes: 28856a9 ("crypto: xts - consolidate sanity check for keys") Signed-off-by: Ondrej Kozina <okozina@xxxxxxxxxx> Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/md/dm-crypt.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -1649,12 +1649,16 @@ out: static int crypt_wipe_key(struct crypt_config *cc) { + int r; + clear_bit(DM_CRYPT_KEY_VALID, &cc->flags); - memset(&cc->key, 0, cc->key_size * sizeof(u8)); + get_random_bytes(&cc->key, cc->key_size); kzfree(cc->key_string); cc->key_string = NULL; + r = crypt_setkey(cc); + memset(&cc->key, 0, cc->key_size * sizeof(u8)); - return crypt_setkey(cc); + return r; } static void crypt_dtr(struct dm_target *ti) Patches currently in stable-queue which might be from okozina@xxxxxxxxxx are queue-4.10/dm-crypt-rewrite-wipe-key-in-crypto-layer-using-random-data.patch