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-rw-r--r--crypto/rsa/rsa_ameth.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/rsa/rsa_ameth.c b/crypto/rsa/rsa_ameth.c
index ca3922e6c298..4e0621827cf3 100644
--- a/crypto/rsa/rsa_ameth.c
+++ b/crypto/rsa/rsa_ameth.c
@@ -268,7 +268,7 @@ static X509_ALGOR *rsa_mgf1_decode(X509_ALGOR *alg)
{
const unsigned char *p;
int plen;
- if (alg == NULL)
+ if (alg == NULL || alg->parameter == NULL)
return NULL;
if (OBJ_obj2nid(alg->algorithm) != NID_mgf1)
return NULL;