X.509: Fix error code in x509_cert_parse()

[ Upstream commit 4e880168e9ffb1cdbdb72b3b48ab0324b30c2d62 ]

We forgot to set the error code on this path so it could result in
returning NULL which leads to a NULL dereference.

Fixes: db6c43bd2132 ("crypto: KEYS: convert public key and digsig asym to the akcipher api")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c
index 029f7051f2beae25286f4601948303408ed75849..ce2df8c9c583970be0177d2a50de85316fb1c2b2 100644 (file)
--- a/crypto/asymmetric_keys/x509_cert_parser.c
+++ b/crypto/asymmetric_keys/x509_cert_parser.c
@@ -102,6 +102,7 @@ struct x509_certificate *x509_cert_parse(const void *data, size_t datalen)
                }
        }
 
+       ret = -ENOMEM;
        cert->pub->key = kmemdup(ctx->key, ctx->key_size, GFP_KERNEL);
        if (!cert->pub->key)
                goto error_decode;