diff --git a/mysql-test/suite/innodb/r/innodb.result b/mysql-test/suite/innodb/r/innodb.result
index ace226781c09a..326aed06901ec 100644
--- a/mysql-test/suite/innodb/r/innodb.result
+++ b/mysql-test/suite/innodb/r/innodb.result
@@ -3373,3 +3373,20 @@ c1	c2
 9	3
 DROP TABLE t1;
 DROP TABLE t2;
+#
+# MDEV-24748 Extern field check missing
+#	in btr_index_rec_validate()
+#
+CREATE TABLE t1 (pk INT, c1 char(255),
+c2 char(255), c3 char(255), c4 char(255),
+c5 char(255), c6 char(255), c7 char(255),
+c8 char(255), primary key (pk)
+) CHARACTER SET utf32 ENGINE=InnoDB;
+INSERT INTO t1 VALUES
+(1, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'),
+(2, 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p');
+CHECK TABLE t1;
+Table	Op	Msg_type	Msg_text
+test.t1	check	status	OK
+ALTER TABLE t1 FORCE;
+DROP TABLE t1;
diff --git a/mysql-test/suite/innodb/t/innodb.test b/mysql-test/suite/innodb/t/innodb.test
index 7aa146d7d99da..d494f40bcb60a 100644
--- a/mysql-test/suite/innodb/t/innodb.test
+++ b/mysql-test/suite/innodb/t/innodb.test
@@ -2628,3 +2628,21 @@ SELECT * FROM t2;
 
 DROP TABLE t1;
 DROP TABLE t2;
+
+--echo #
+--echo # MDEV-24748 Extern field check missing
+--echo #	in btr_index_rec_validate()
+--echo #
+CREATE TABLE t1 (pk INT, c1 char(255),
+c2 char(255), c3 char(255), c4 char(255),
+c5 char(255), c6 char(255), c7 char(255),
+c8 char(255), primary key (pk)
+) CHARACTER SET utf32 ENGINE=InnoDB;
+
+INSERT INTO t1 VALUES
+  (1, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'),
+  (2, 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p');
+CHECK TABLE t1;
+ALTER TABLE t1 FORCE;
+# Cleanup
+DROP TABLE t1;
diff --git a/storage/innobase/btr/btr0btr.cc b/storage/innobase/btr/btr0btr.cc
index 511ac66d58cc0..f7fe441308678 100644
--- a/storage/innobase/btr/btr0btr.cc
+++ b/storage/innobase/btr/btr0btr.cc
@@ -4519,6 +4519,18 @@ btr_index_rec_validate(
 
 		rec_get_nth_field_offs(offsets, i, &len);
 
+		if (rec_offs_nth_extern(offsets, i)) {
+
+			const byte* data = rec_get_nth_field(
+				rec, offsets, i, &len);
+			len -= BTR_EXTERN_FIELD_REF_SIZE;
+			ulint extern_len = mach_read_from_4(
+				data + len + BTR_EXTERN_LEN + 4);
+			if (fixed_size == extern_len) {
+				continue;
+			}
+		}
+
 		/* Note that if fixed_size != 0, it equals the
 		length of a fixed-size column in the clustered index.
 		We should adjust it here.