diff --git a/NEWS b/NEWS
index da14c247ee0ec..26bbf705270d1 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,10 @@ PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 ?? ??? ????, PHP 8.4.0RC4
 
+- BcMath:
+  . Fixed bug GH-16265 (Added early return case when result is 0)
+    (Saki Takamachi).
+
 - Core:
   . Fixed bug GH-16574 (Incorrect error "undefined method" messages).
     (nielsdos)
diff --git a/ext/bcmath/libbcmath/src/div.c b/ext/bcmath/libbcmath/src/div.c
index 35ca450ceb78c..a9c001afcc94b 100644
--- a/ext/bcmath/libbcmath/src/div.c
+++ b/ext/bcmath/libbcmath/src/div.c
@@ -444,6 +444,11 @@ bool bc_divide(bc_num numerator, bc_num divisor, bc_num *quot, size_t scale)
 	/* Length of numerator data that can be read */
 	size_t numerator_readable_len = numeratorend - numeratorptr + 1;
 
+	if (divisor_len > numerator_readable_len + numerator_bottom_extension) {
+		*quot = bc_copy_num(BCG(_zero_));
+		return true;
+	}
+
 	/* If divisor is 1 here, return the result of adjusting the decimal point position of numerator. */
 	if (divisor_len == 1 && *divisorptr == 1) {
 		if (numerator_len == 0) {
diff --git a/ext/bcmath/tests/gh16265.phpt b/ext/bcmath/tests/gh16265.phpt
new file mode 100644
index 0000000000000..bc562d81df1ad
--- /dev/null
+++ b/ext/bcmath/tests/gh16265.phpt
@@ -0,0 +1,12 @@
+--TEST--
+GH-16265 Segmentation fault (index oob) in ext/bcmath/libbcmath/src/convert.c:155
+--EXTENSIONS--
+bcmath
+--INI--
+bcmath.scale=0
+--FILE--
+<?php
+echo bcdiv('-0.01', -12.3456789000e10, 9);
+?>
+--EXPECT--
+0.000000000