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-rw-r--r--src/pki_crypto.c3
-rw-r--r--src/pki_mbedcrypto.c3
2 files changed, 6 insertions, 0 deletions
diff --git a/src/pki_crypto.c b/src/pki_crypto.c
index f37dc093..40ffedfe 100644
--- a/src/pki_crypto.c
+++ b/src/pki_crypto.c
@@ -1681,6 +1681,9 @@ ssh_signature pki_signature_from_blob(const ssh_key pubkey,
case SSH_KEYTYPE_RSA:
case SSH_KEYTYPE_RSA1:
sig = pki_signature_from_rsa_blob(pubkey, sig_blob, sig);
+ if (sig == NULL) {
+ return NULL;
+ }
sig->type_c = ssh_key_signature_to_char(type, hash_type);
break;
case SSH_KEYTYPE_ECDSA:
diff --git a/src/pki_mbedcrypto.c b/src/pki_mbedcrypto.c
index ccce014c..57a4ffae 100644
--- a/src/pki_mbedcrypto.c
+++ b/src/pki_mbedcrypto.c
@@ -917,6 +917,9 @@ ssh_signature pki_signature_from_blob(const ssh_key pubkey,
switch(type) {
case SSH_KEYTYPE_RSA:
sig = pki_signature_from_rsa_blob(pubkey, sig_blob, sig);
+ if (sig == NULL) {
+ return NULL;
+ }
sig->type_c = ssh_key_signature_to_char(type, hash_type);
break;
case SSH_KEYTYPE_ECDSA: {