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-rw-r--r--drivers/md/dm-crypt.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index cf663105668..a601a427885 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -690,6 +690,8 @@ bad3:
bad2:
crypto_free_tfm(tfm);
bad1:
+ /* Must zero key material before freeing */
+ memset(cc, 0, sizeof(*cc) + cc->key_size * sizeof(u8));
kfree(cc);
return -EINVAL;
}
@@ -706,6 +708,9 @@ static void crypt_dtr(struct dm_target *ti)
cc->iv_gen_ops->dtr(cc);
crypto_free_tfm(cc->tfm);
dm_put_device(ti, cc->dev);
+
+ /* Must zero key material before freeing */
+ memset(cc, 0, sizeof(*cc) + cc->key_size * sizeof(u8));
kfree(cc);
}