diff options
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/asymmetric_keys/x509_public_key.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/crypto/asymmetric_keys/x509_public_key.c b/crypto/asymmetric_keys/x509_public_key.c index 752d8d5b48fa..fc77a2bd70ba 100644 --- a/crypto/asymmetric_keys/x509_public_key.c +++ b/crypto/asymmetric_keys/x509_public_key.c @@ -230,6 +230,11 @@ int x509_check_for_self_signed(struct x509_certificate *cert) pr_devel("==>%s()\n", __func__); + if (cert->raw_subject_size != cert->raw_issuer_size || + memcmp(cert->raw_subject, cert->raw_issuer, + cert->raw_issuer_size) != 0) + goto not_self_signed; + if (cert->sig->auth_ids[0] || cert->sig->auth_ids[1]) { /* If the AKID is present it may have one or two parts. If * both are supplied, both must match. @@ -246,6 +251,10 @@ int x509_check_for_self_signed(struct x509_certificate *cert) goto out; } + ret = -EKEYREJECTED; + if (cert->pub->pkey_algo != cert->sig->pkey_algo) + goto out; + ret = public_key_verify_signature(cert->pub, cert->sig); if (ret < 0) { if (ret == -ENOPKG) { |