From: Tomas Mraz <tomas@openssl.org>
Date: Tue, 11 Nov 2025 09:11:44 +0000 (+0100)
Subject: Test invalid out of range character handling in UTF8_getc()
X-Git-Tag: 4.0-PRE-CLANG-FORMAT-WEBKIT~196
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3595339b6901d9880282168eca75773080969c38;p=thirdparty%2Fopenssl.git

Test invalid out of range character handling in UTF8_getc()

Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Norbert Pocs <norbertp@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/29119)
---

diff --git a/test/asn1_internal_test.c b/test/asn1_internal_test.c
index d4a2bb10ba7..55bc92cb644 100644
--- a/test/asn1_internal_test.c
+++ b/test/asn1_internal_test.c
@@ -191,6 +191,16 @@ static int test_unicode_range(void)
     return ok;
 }
 
+static int test_invalid_utf8(void)
+{
+    const unsigned char inv_utf8[] = "\xF4\x90\x80\x80";
+    unsigned long val;
+
+    if (!TEST_int_lt(UTF8_getc(inv_utf8, sizeof(inv_utf8), &val), 0))
+        return 0;
+    return 1;
+}
+
 /**********************************************************************
  *
  * Tests of object creation
@@ -551,6 +561,7 @@ int setup_tests(void)
     ADD_TEST(test_standard_methods);
     ADD_TEST(test_empty_nonoptional_content);
     ADD_TEST(test_unicode_range);
+    ADD_TEST(test_invalid_utf8);
     ADD_TEST(test_obj_create);
     ADD_TEST(test_obj_nid_undef);
     ADD_TEST(posix_time_test);