From a38556c13b132c2e3b275fac0d2e2f0f32895036 Mon Sep 17 00:00:00 2001 Message-Id: From: Paul Gardiner Date: Tue, 12 May 2020 17:21:18 +0100 Subject: [PATCH] Fix possible crash when using openssl for digital signature support. --- source/helpers/pkcs7/pkcs7-openssl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/source/helpers/pkcs7/pkcs7-openssl.c b/source/helpers/pkcs7/pkcs7-openssl.c index dfb99bb8c..a0a15fbd5 100644 --- a/source/helpers/pkcs7/pkcs7-openssl.c +++ b/source/helpers/pkcs7/pkcs7-openssl.c @@ -606,7 +606,7 @@ static char *x509_get_name_entry_string(fz_context *ctx, X509_NAME *name, int ni int idx = X509_NAME_get_index_by_NID(name, nid, -1); X509_NAME_ENTRY *entry = X509_NAME_get_entry(name, idx); ASN1_STRING *data = X509_NAME_ENTRY_get_data(entry); - return fz_strdup(ctx, (const char *)ASN1_STRING_get0_data(data)); + return data ? fz_strdup(ctx, (const char *)ASN1_STRING_get0_data(data)) : NULL; } static pdf_pkcs7_designated_name *x509_designated_name(fz_context *ctx, X509 *x509) -- 2.27.0.rc1.210.gb37d18b052