From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Mon, 18 Jul 2022 14:10:45 +0300
Subject: nvme-auth: uninitialized variable in nvme_auth_transform_key()
Patch-mainline: v6.0-rc1
Git-commit: 80e2768496a494ce3166f8358d8665d2a056bcb7
References: git-fixes
A couple of the early error gotos call kfree_sensitive(transformed_key);
before "transformed_key" has been initialized.
Fixes: db1312dd9548 ("nvmet: implement basic In-Band Authentication")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
drivers/nvme/common/auth.c | 25 ++++++++++++++++---------
1 file changed, 16 insertions(+), 9 deletions(-)
--- a/drivers/nvme/common/auth.c
+++ b/drivers/nvme/common/auth.c
@@ -278,26 +278,33 @@ u8 *nvme_auth_transform_key(struct nvme_
shash->tfm = key_tfm;
ret = crypto_shash_setkey(key_tfm, key->key, key->len);
if (ret < 0)
- goto out_free_shash;
+ goto out_free_transformed_key;
ret = crypto_shash_init(shash);
if (ret < 0)
- goto out_free_shash;
+ goto out_free_transformed_key;
ret = crypto_shash_update(shash, nqn, strlen(nqn));
if (ret < 0)
- goto out_free_shash;
+ goto out_free_transformed_key;
ret = crypto_shash_update(shash, "NVMe-over-Fabrics", 17);
if (ret < 0)
- goto out_free_shash;
+ goto out_free_transformed_key;
ret = crypto_shash_final(shash, transformed_key);
+ if (ret < 0)
+ goto out_free_transformed_key;
+
+ kfree(shash);
+ crypto_free_shash(key_tfm);
+
+ return transformed_key;
+
+out_free_transformed_key:
+ kfree_sensitive(transformed_key);
out_free_shash:
kfree(shash);
out_free_key:
crypto_free_shash(key_tfm);
- if (ret < 0) {
- kfree_sensitive(transformed_key);
- return ERR_PTR(ret);
- }
- return transformed_key;
+
+ return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(nvme_auth_transform_key);