diff options
| author | Milan Broz <gmazyland@gmail.com> | 2014-11-22 09:36:04 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-08 10:00:48 -0800 |
| commit | a6e37a9dcf822402ad1f9afc5a7bca0c98a486a1 (patch) | |
| tree | 31485afb60f479140ce3595035beec5a492dbac8 /drivers | |
| parent | baf2341be09f2d2782cf0e0242efa3868fc450af (diff) | |
dm crypt: use memzero_explicit for on-stack buffer
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@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/dm-crypt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 9533f835ce07..4a8d19d0a5a4 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -709,7 +709,7 @@ static int crypt_iv_tcw_whitening(struct crypt_config *cc, 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; } |