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crypto: caam - add error check to caam_rsa_set_priv_key_form

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BugLink: https://bugs.launchpad.net/bugs/2101915

[ 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: 52e26d77b8 ("crypto: caam - add support for RSA key form 2")
Signed-off-by: Chen Ridong <chenridong@huawei.com>
Reviewed-by: Gaurav Jain <gaurav.jain@nxp.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Chen Ridong
2025-03-11 08:51:19 +09:00
committed by Stefan Bader
parent 62ca6e9f8e
commit fcd4b59052
1 changed files with 7 additions and 4 deletions
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drivers/crypto/caam/caampkc.c
+7 -4
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@@ -984,7 +984,7 @@ err:
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;
@@ -994,7 +994,7 @@ 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);
@@ -1029,7 +1029,7 @@ 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);
@@ -1043,6 +1043,7 @@ free_q:
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,
@@ -1088,7 +1089,9 @@ 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;