diff --git a/libs/native/src/test/java/org/elasticsearch/nativeaccess/jdk/JDKVectorLibraryFloat32Tests.java b/libs/native/src/test/java/org/elasticsearch/nativeaccess/jdk/JDKVectorLibraryFloat32Tests.java
index 724a9e0610a3d..4e967bd339e5c 100644
--- a/libs/native/src/test/java/org/elasticsearch/nativeaccess/jdk/JDKVectorLibraryFloat32Tests.java
+++ b/libs/native/src/test/java/org/elasticsearch/nativeaccess/jdk/JDKVectorLibraryFloat32Tests.java
@@ -226,6 +226,26 @@ public void testFloat32BulkWithOffsetsHeapSegments() {
         assertArrayEquals(expectedScores, bulkScores, delta);
     }
 
+    public void testBulkIllegalDims() {
+        assumeTrue(notSupportedMsg(), supported());
+        var segA = arena.allocate((long) size * 3 * Float.BYTES);
+        var segB = arena.allocate((long) size * 3 * Float.BYTES);
+        var segS = arena.allocate((long) size * Float.BYTES);
+
+        Exception ex = expectThrows(IOOBE, () -> similarityBulk(segA, segB, size, 4, segS));
+        assertThat(ex.getMessage(), containsString("out of bounds for length"));
+
+        ex = expectThrows(IOOBE, () -> similarityBulk(segA, segB, size, -1, segS));
+        assertThat(ex.getMessage(), containsString("out of bounds for length"));
+
+        ex = expectThrows(IOOBE, () -> similarityBulk(segA, segB, -1, 3, segS));
+        assertThat(ex.getMessage(), containsString("out of bounds for length"));
+
+        var tooSmall = arena.allocate((long) 3 * Float.BYTES - 1);
+        ex = expectThrows(IOOBE, () -> similarityBulk(segA, segB, size, 3, tooSmall));
+        assertThat(ex.getMessage(), containsString("out of bounds for length"));
+    }
+
     public void testIllegalDims() {
         assumeTrue(notSupportedMsg(), supported());
         var segment = arena.allocate((long) size * 3 * Float.BYTES);
diff --git a/libs/native/src/test/java/org/elasticsearch/nativeaccess/jdk/JDKVectorLibraryInt8Tests.java b/libs/native/src/test/java/org/elasticsearch/nativeaccess/jdk/JDKVectorLibraryInt8Tests.java
index f722c3c7dc1f4..93c64083f5956 100644
--- a/libs/native/src/test/java/org/elasticsearch/nativeaccess/jdk/JDKVectorLibraryInt8Tests.java
+++ b/libs/native/src/test/java/org/elasticsearch/nativeaccess/jdk/JDKVectorLibraryInt8Tests.java
@@ -197,6 +197,26 @@ public void testByteBulkWithOffsetsHeapSegments() {
         assertArrayEquals(expectedScores, bulkScores, delta);
     }
 
+    public void testBulkIllegalDims() {
+        assumeTrue(notSupportedMsg(), supported());
+        var segA = arena.allocate((long) size * 3);
+        var segB = arena.allocate((long) size * 3);
+        var segS = arena.allocate((long) size * Float.BYTES);
+
+        Exception ex = expectThrows(IOOBE, () -> similarityBulk(segA, segB, size, 4, segS));
+        assertThat(ex.getMessage(), containsString("out of bounds for length"));
+
+        ex = expectThrows(IOOBE, () -> similarityBulk(segA, segB, size, -1, segS));
+        assertThat(ex.getMessage(), containsString("out of bounds for length"));
+
+        ex = expectThrows(IOOBE, () -> similarityBulk(segA, segB, -1, 3, segS));
+        assertThat(ex.getMessage(), containsString("out of bounds for length"));
+
+        var tooSmall = arena.allocate((long) 3 * Float.BYTES - 1);
+        ex = expectThrows(IOOBE, () -> similarityBulk(segA, segB, size, 3, tooSmall));
+        assertThat(ex.getMessage(), containsString("out of bounds for length"));
+    }
+
     public void testIllegalDims() {
         assumeTrue(notSupportedMsg(), supported());
         var segment = arena.allocate((long) size * 3);