5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chen Ridong <chenridong@xxxxxxxxxx>
[ Upstream commit b64140c74e954f1db6eae5548ca3a1f41b6fad79 ]
The caam_rsa_set_priv_key_form did not check for memory allocation errors.
Add the checks to the caam_rsa_set_priv_key_form functions.
Fixes: 52e26d77b8b3 ("crypto: caam - add support for RSA key form 2")
Signed-off-by: Chen Ridong <chenridong@xxxxxxxxxx>
Reviewed-by: Gaurav Jain <gaurav.jain@xxxxxxx>
Reviewed-by: Horia Geantă <horia.geanta@xxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/crypto/caam/caampkc.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c
index 51b48b57266a6..7881846651d12 100644
--- a/drivers/crypto/caam/caampkc.c
+++ b/drivers/crypto/caam/caampkc.c
@@ -979,7 +979,7 @@ static int caam_rsa_set_pub_key(struct crypto_akcipher *tfm, const void *key,
return -ENOMEM;
}
-static void caam_rsa_set_priv_key_form(struct caam_rsa_ctx *ctx,
+static int caam_rsa_set_priv_key_form(struct caam_rsa_ctx *ctx,
struct rsa_key *raw_key)
{
struct caam_rsa_key *rsa_key = &ctx->key;
@@ -988,7 +988,7 @@ static void caam_rsa_set_priv_key_form(struct caam_rsa_ctx *ctx,
rsa_key->p = caam_read_raw_data(raw_key->p, &p_sz);
if (!rsa_key->p)
- return;
+ return -ENOMEM;
rsa_key->p_sz = p_sz;
rsa_key->q = caam_read_raw_data(raw_key->q, &q_sz);
@@ -1021,7 +1021,7 @@ static void caam_rsa_set_priv_key_form(struct caam_rsa_ctx *ctx,
rsa_key->priv_form = FORM3;
- return;
+ return 0;
free_dq:
kfree_sensitive(rsa_key->dq);
@@ -1035,6 +1035,7 @@ static void caam_rsa_set_priv_key_form(struct caam_rsa_ctx *ctx,
kfree_sensitive(rsa_key->q);
free_p:
kfree_sensitive(rsa_key->p);
+ return -ENOMEM;
}
static int caam_rsa_set_priv_key(struct crypto_akcipher *tfm, const void *key,
@@ -1080,7 +1081,9 @@ static int caam_rsa_set_priv_key(struct crypto_akcipher *tfm, const void *key,
rsa_key->e_sz = raw_key.e_sz;
rsa_key->n_sz = raw_key.n_sz;
- caam_rsa_set_priv_key_form(ctx, &raw_key);
+ ret = caam_rsa_set_priv_key_form(ctx, &raw_key);
+ if (ret)
+ goto err;
return 0;
--
2.43.0
