28 lines
1.2 KiB
Diff
28 lines
1.2 KiB
Diff
From a38556c13b132c2e3b275fac0d2e2f0f32895036 Mon Sep 17 00:00:00 2001
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Message-Id: <a38556c13b132c2e3b275fac0d2e2f0f32895036.1590932097.git.mjg@fedoraproject.org>
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From: Paul Gardiner <paul.gardiner@artifex.com>
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Date: Tue, 12 May 2020 17:21:18 +0100
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Subject: [PATCH] Fix possible crash when using openssl for digital signature
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support.
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---
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source/helpers/pkcs7/pkcs7-openssl.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/source/helpers/pkcs7/pkcs7-openssl.c b/source/helpers/pkcs7/pkcs7-openssl.c
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index dfb99bb8c..a0a15fbd5 100644
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--- a/source/helpers/pkcs7/pkcs7-openssl.c
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+++ b/source/helpers/pkcs7/pkcs7-openssl.c
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@@ -606,7 +606,7 @@ static char *x509_get_name_entry_string(fz_context *ctx, X509_NAME *name, int ni
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int idx = X509_NAME_get_index_by_NID(name, nid, -1);
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X509_NAME_ENTRY *entry = X509_NAME_get_entry(name, idx);
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ASN1_STRING *data = X509_NAME_ENTRY_get_data(entry);
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- return fz_strdup(ctx, (const char *)ASN1_STRING_get0_data(data));
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+ return data ? fz_strdup(ctx, (const char *)ASN1_STRING_get0_data(data)) : NULL;
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}
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static pdf_pkcs7_designated_name *x509_designated_name(fz_context *ctx, X509 *x509)
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--
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2.27.0.rc1.210.gb37d18b052
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