6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gaosheng Cui <cuigaosheng1@xxxxxxxxxx>
[ Upstream commit 89f58f96d1e2357601c092d85b40a2109cf25ef3 ]
If we fail to call nvme_auth_augmented_challenge, or fail to kmalloc
for shash, we should free the memory allocation for challenge, so add
err path out_free_challenge to fix the memory leak.
Fixes: 7a277c37d352 ("nvmet-auth: Diffie-Hellman key exchange support")
Signed-off-by: Gaosheng Cui <cuigaosheng1@xxxxxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Keith Busch <kbusch@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/nvme/target/auth.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/nvme/target/auth.c b/drivers/nvme/target/auth.c
index e900525b78665..aacc05ec00c2b 100644
--- a/drivers/nvme/target/auth.c
+++ b/drivers/nvme/target/auth.c
@@ -314,7 +314,7 @@ int nvmet_auth_host_hash(struct nvmet_req *req, u8 *response,
req->sq->dhchap_c1,
challenge, shash_len);
if (ret)
- goto out_free_response;
+ goto out_free_challenge;
}
pr_debug("ctrl %d qid %d host response seq %u transaction %d\n",
@@ -325,7 +325,7 @@ int nvmet_auth_host_hash(struct nvmet_req *req, u8 *response,
GFP_KERNEL);
if (!shash) {
ret = -ENOMEM;
- goto out_free_response;
+ goto out_free_challenge;
}
shash->tfm = shash_tfm;
ret = crypto_shash_init(shash);
@@ -361,9 +361,10 @@ int nvmet_auth_host_hash(struct nvmet_req *req, u8 *response,
goto out;
ret = crypto_shash_final(shash, response);
out:
+ kfree(shash);
+out_free_challenge:
if (challenge != req->sq->dhchap_c1)
kfree(challenge);
- kfree(shash);
out_free_response:
kfree_sensitive(host_response);
out_free_tfm:
@@ -426,14 +427,14 @@ int nvmet_auth_ctrl_hash(struct nvmet_req *req, u8 *response,
req->sq->dhchap_c2,
challenge, shash_len);
if (ret)
- goto out_free_response;
+ goto out_free_challenge;
}
shash = kzalloc(sizeof(*shash) + crypto_shash_descsize(shash_tfm),
GFP_KERNEL);
if (!shash) {
ret = -ENOMEM;
- goto out_free_response;
+ goto out_free_challenge;
}
shash->tfm = shash_tfm;
@@ -470,9 +471,10 @@ int nvmet_auth_ctrl_hash(struct nvmet_req *req, u8 *response,
goto out;
ret = crypto_shash_final(shash, response);
out:
+ kfree(shash);
+out_free_challenge:
if (challenge != req->sq->dhchap_c2)
kfree(challenge);
- kfree(shash);
out_free_response:
kfree_sensitive(ctrl_response);
out_free_tfm:
--
2.43.0
