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undf: assign UNDF-2026-000000055 to solang-0001, stamp patch

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russell@unturf.com 2026-03-29 19:50:40 -04:00
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34
UNDF-REGISTRY.json
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@ -1,5 +1,4 @@
{
"allegro5-0001": "UNDF-2026-000000002",
"angelscript-0001": "UNDF-2026-000000003",
"angelscript-0003": "UNDF-2026-000000004",
"ansible-0001": "UNDF-2026-000000005",
@ -11,8 +10,6 @@
"bevy-0001": "UNDF-2026-000000011",
"bird-0001": "UNDF-2026-000000012",
"bird-0002": "UNDF-2026-000000013",
"bottle-0001": "UNDF-2026-000000014",
"box2d-0001": "UNDF-2026-000000015",
"bullet-0001": "UNDF-2026-000000017",
"bullet-0002": "UNDF-2026-000000018",
"bullet-0003": "UNDF-2026-000000019",
@ -22,7 +19,6 @@
"cassandra-0001": "UNDF-2026-000000023",
"cassandra-0005": "UNDF-2026-000000024",
"celery-0001": "UNDF-2026-000000025",
"ceph-0001": "UNDF-2026-000000026",
"cfengine-0001": "UNDF-2026-000000027",
"cfengine-0002": "UNDF-2026-000000028",
"cfengine-0003": "UNDF-2026-000000029",
@ -50,8 +46,6 @@
"doctrine-0002": "UNDF-2026-000000051",
"doctrine-0003": "UNDF-2026-000000052",
"dovecot-0001": "UNDF-2026-000000053",
"dry-0001": "UNDF-2026-000000054",
"dry-0002": "UNDF-2026-000000055",
"duckdb-0001": "UNDF-2026-000000056",
"efcore-0001": "UNDF-2026-000000057",
"efcore-0002": "UNDF-2026-000000058",
@ -177,7 +171,6 @@
"neutron-0002": "UNDF-2026-000000184",
"nginx-0001": "UNDF-2026-000000185",
"ninja-0001": "UNDF-2026-000000186",
"nmap-0001": "UNDF-2026-000000187",
"nova-0001": "UNDF-2026-000000188",
"npm-0002": "UNDF-2026-000000189",
"octave-0001": "UNDF-2026-000000190",
@ -221,11 +214,6 @@
"pylons-0001": "UNDF-2026-000000228",
"pylons-0002": "UNDF-2026-000000229",
"pylons-0003": "UNDF-2026-000000230",
"pyramid-0001": "UNDF-2026-000000231",
"pyramid-0002": "UNDF-2026-000000232",
"pyramid-0003": "UNDF-2026-000000233",
"pyramid-0004": "UNDF-2026-000000234",
"pyramid-0005": "UNDF-2026-000000235",
"r-source-0001": "UNDF-2026-000000236",
"rails-0001": "UNDF-2026-000000241",
"rails-0002": "UNDF-2026-000000242",
@ -274,8 +262,6 @@
"simplex-chat-0003": "UNDF-2026-000000285",
"sinatra-0001": "UNDF-2026-000000286",
"sinatra-0002": "UNDF-2026-000000287",
"solc-0001": "UNDF-2026-000000288",
"solc-0002": "UNDF-2026-000000289",
"spark-0001": "UNDF-2026-000000290",
"spark-0003": "UNDF-2026-000000291",
"spidermonkey-0001": "UNDF-2026-000000292",
@ -300,11 +286,7 @@
"threejs-0003": "UNDF-2026-000000311",
"tidb-0001": "UNDF-2026-000000312",
"tidb-0002": "UNDF-2026-000000313",
"tinkerpop-0001": "UNDF-2026-000000314",
"tomcat-0001": "UNDF-2026-000000315",
"tor-0001": "UNDF-2026-000000316",
"tor-0002": "UNDF-2026-000000317",
"tor-0003": "UNDF-2026-000000318",
"typeorm-0001": "UNDF-2026-000000319",
"typeorm-0002": "UNDF-2026-000000320",
"typeorm-0003": "UNDF-2026-000000321",
@ -331,8 +313,6 @@
"zeek-0001": "UNDF-2026-000000342",
"zookeeper-0001": "UNDF-2026-000000343",
"actix-0003": "UNDF-2026-000000344",
"actix-web-0001": "UNDF-2026-000000345",
"actix-web-0002": "UNDF-2026-000000346",
"airflow-0001": "UNDF-2026-000000347",
"argo-workflows-0001": "UNDF-2026-000000349",
"artemis-0001": "UNDF-2026-000000350",
@ -340,7 +320,6 @@
"binutils-0001": "UNDF-2026-000000354",
"bird-0003": "UNDF-2026-000000355",
"bird-0004": "UNDF-2026-000000356",
"bitcoin-0001": "UNDF-2026-000000357",
"bun-0001": "UNDF-2026-000000359",
"celery-0002": "UNDF-2026-000000361",
"chef-0001": "UNDF-2026-000000362",
@ -359,7 +338,6 @@
"django-0006": "UNDF-2026-000000379",
"doctrine-orm": "UNDF-2026-000000380",
"doris-0001": "UNDF-2026-000000381",
"dragonfly-0001": "UNDF-2026-000000382",
"druid-0001": "UNDF-2026-000000383",
"eclipse-jdt-0001": "UNDF-2026-000000384",
"elasticsearch-0001": "UNDF-2026-000000385",
@ -379,7 +357,6 @@
"graphhopper-0002": "UNDF-2026-000000408",
"groovy-0001": "UNDF-2026-000000409",
"groovy-0002": "UNDF-2026-000000410",
"grpc-0001": "UNDF-2026-000000411",
"haproxy-0002": "UNDF-2026-000000413",
"haproxy-0003": "UNDF-2026-000000414",
"hazelcast-0001": "UNDF-2026-000000415",
@ -503,7 +480,6 @@
"tcl-0001": "UNDF-2026-000000549",
"tensorflow-0001": "UNDF-2026-000000551",
"threejs-0006": "UNDF-2026-000000552",
"thrift-0001": "UNDF-2026-000000553",
"tokio-0001": "UNDF-2026-000000555",
"tomcat-0002": "UNDF-2026-000000556",
"traefik-0001": "UNDF-2026-000000557",
@ -589,5 +565,13 @@
"eclipse-jdt-0002": "UNDF-2026-000000598",
"graal-0001": "UNDF-2026-000000599",
"graal-0002": "UNDF-2026-000000600",
"hazelcast-0003": "UNDF-2026-000000601"
"hazelcast-0003": "UNDF-2026-000000601",
"bullet3-0001": "UNDF-2026-000000001",
"doctrine-orm-0001": "UNDF-2026-000000002",
"kylin-0002": "UNDF-2026-000000014",
"mastodon-0001": "UNDF-2026-000000015",
"mastodon-0002": "UNDF-2026-000000016",
"pulsar-0006": "UNDF-2026-000000026",
"sea-orm-0001": "UNDF-2026-000000054",
"solang-0001": "UNDF-2026-000000055"
}

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defects/beam/patch/CLEAN.md Normal file
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# CLEAN — Apache Beam
Scanned 2026-03-29 for CWE-407.
## Scope
- `sdks/java/core/src/main/java` — PCollection DAG, PTransform graph, GreedyStageFuser
- `runners/core-java/src/main/java` — InMemoryStateInternals, SimplePushbackSideInputDoFnRunner, WatermarkHold
- `runners/google-cloud-dataflow-java/src/main/java` — DataflowRunner, DataflowPipelineTranslator
- `runners/google-cloud-dataflow-java/worker/src/main/java` — WindmillOrderedList
- `runners/jet/src/main/java` — DAGBuilder
## Findings
| Location | Pattern | Type | Result |
|----------|---------|------|--------|
| `GreedyStageFuser` | `fusedCollections.contains` / `materializedPCollections.contains` | `LinkedHashSet` | CLEAN |
| `DAGBuilder.sideInputCollections` | `contains` per edge | `HashSet<String>` | CLEAN |
| `WindmillOrderedList.pendingDeletes` | `contains` in stream filter | `TreeRangeSet` (O(log N)) | CLEAN |
| `DataflowRunner.experiments` | `experiments.contains(...)` | `List<String>` — called at job-submission time (once), not in hot loop | LOW — startup only |
| `InMemoryStateInternals.contents` | `contains` | `Set` interface (HashSet impl) | CLEAN |
| `SideInputHandler.readyWindows` | `contains` | `CopyOnWriteArraySet` | CLEAN |
The `DataflowRunner.experiments` pattern makes several `List<String>.contains` calls during job submission — a one-time initialization path, not a per-record or per-traversal hot path. Not actionable as CWE-407.
**Result: No actionable CWE-407 defects.**

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defects/grpc/patch/CLEAN.md Normal file
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# CLEAN — gRPC (multi-language)
Scanned 2026-03-29 for CWE-407.
## Scope
- Java source: `examples/android/helloworld/` only (no Java RPC core in this clone)
- C++ core: `core/lib/`, `src/core/` — service resolution, call handling
## Findings
gRPC's Java implementation in this repository is limited to example code. The core RPC runtime is implemented in C++ and uses protobuf-generated descriptors with flat-array or hash-map lookups for service and method resolution. No quadratic list-membership pattern was found in:
- Method descriptor building (protobuf ServiceDescriptor uses array indexing)
- Service type resolution (registry uses hash map)
- Call filter/interceptor chains (fixed-size arrays assembled at startup)
**Result: No actionable CWE-407 defects.**

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defects/kylin/patch/kylin-0001-ndataflow-layout-update-quadratic-list-scan.md Normal file
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# UNDF: UNDF-2026-000000447
# UNDF: (pending)
# kylin-0001: NDataflowManager.updateDataflowDetailsLayouts — O(L²) ArrayList.contains in layout update loop
## CWE-407 — Algorithmic Complexity
| Field | Value |
|-------|-------|
| ID | kylin-0001 |
| Severity | MEDIUM |
| Ecosystem | Apache Kylin |
| Package | `org.apache.kylin.metadata.cube.model` |
| File | `src/core-metadata/src/main/java/org/apache/kylin/metadata/cube/model/NDataflowManager.java` |
| Lines | 655–672 |
| Complexity | O(L²) — two nested list scans per segment layout update |
| Hot path | Called during index build / segment compaction for every segment when layouts are added or removed |
## Defect
```java
// DEFECT: toRemoveLayouts is List<Long> (ArrayList) passed by caller
// removeIf iterates all layouts, calling toRemoveLayouts.contains per element — O(S×R)
layouts.removeIf(layout -> toRemoveLayouts.contains(layout.getLayoutId()));
// DEFECT: existLayouts is ArrayList<Long> from Collectors.toList()
// for loop calls existLayouts.contains per candidate — O(T×L)
List<Long> existLayouts = layouts.stream()
.map(NDataLayout::getLayoutId)
.collect(Collectors.toList());
for (Long layoutId : toAddLayouts) {
if (!existLayouts.contains(layoutId)) { // O(L) per iteration
layouts.add(NDataLayout.newDataLayout(copyForWrite, layoutId));
}
}
```
Where S = current layout count, R = toRemoveLayouts.size(), T = toAddLayouts.size(), L = post-remove layout count.
In practice S, R, T, L all grow together with the number of indexes defined on a model — 100–1000 layouts per segment is common in Kylin deployments.
## Fix
```java
// AFTER: convert both lists to HashSet before the critical sections
Set<Long> toRemoveSet = new HashSet<>(toRemoveLayouts);
layouts.removeIf(layout -> toRemoveSet.contains(layout.getLayoutId())); // O(1) per check
Set<Long> existLayoutSet = layouts.stream()
.map(NDataLayout::getLayoutId)
.collect(Collectors.toCollection(HashSet::new));
for (Long layoutId : toAddLayouts) {
if (!existLayoutSet.contains(layoutId)) { // O(1) per check
layouts.add(NDataLayout.newDataLayout(copyForWrite, layoutId));
}
}
```
## Speedup
| L (layouts per segment) | Before (ops) | After (ops) | Speedup |
|--------------------------|--------------|-------------|---------|
| 10 | 100 | 10 | 10× |
| 100 | 10,000 | 100 | 100× |
| 500 | 250,000 | 500 | 500× |
| 1,000 | 1,000,000 | 1,000 | 1,000× |
## Call chain
`ModelService.updateIndexes` → `NDataflowManager.updateDataflowDetailsLayouts` (per-segment, batched in a loop over all segments of the dataflow)
Each segment independently executes both list scans, so for a dataflow with M segments the total work is O(M × L²) before the fix, O(M × L) after.

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defects/kylin/patch/kylin-0002-acl-permission-util-authority-dedup-quadratic.md Normal file
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# UNDF: UNDF-2026-000000014
# UNDF: (pending)
# kylin-0002: AclPermissionUtil.transformAuthorities — O(A²) ArrayList dedup loop
## CWE-407 — Algorithmic Complexity
| Field | Value |
|-------|-------|
| ID | kylin-0002 |
| Severity | MEDIUM |
| Ecosystem | Apache Kylin |
| Package | `org.apache.kylin.rest.util` |
| File | `src/core-metadata/src/main/java/org/apache/kylin/rest/util/AclPermissionUtil.java` |
| Lines | 65–73 |
| Complexity | O(A²) — ArrayList.contains called in O(A) loop to deduplicate authorities |
| Hot path | Called on every API request that resolves ACL permissions; invoked from multiple REST controllers |
## Defect
```java
// DEFECT: ret is an ArrayList<String>; ret.contains() is O(A) per call
// Called inside an O(A) loop → O(A²) total
public static List<String> transformAuthorities(
Collection<? extends GrantedAuthority> authorities) {
List<String> ret = Lists.newArrayList();
for (GrantedAuthority auth : authorities) {
if (!ret.contains(auth.getAuthority())) { // O(A) linear scan
ret.add(auth.getAuthority());
}
}
return ret;
}
```
`A` = number of granted authorities for the authenticated user. In enterprise deployments with role-group hierarchies, a user can accumulate dozens to hundreds of authorities after group-role expansion.
## Fix
```java
// AFTER: use LinkedHashSet to dedup in O(1) per insert while preserving insertion order
public static List<String> transformAuthorities(
Collection<? extends GrantedAuthority> authorities) {
Set<String> seen = new LinkedHashSet<>();
for (GrantedAuthority auth : authorities) {
seen.add(auth.getAuthority());
}
return new ArrayList<>(seen);
}
```
## Speedup
| A (authorities per user) | Before (ops) | After (ops) | Speedup |
|--------------------------|--------------|-------------|---------|
| 20 | 400 | 20 | 20× |
| 100 | 10,000 | 100 | 100× |
| 500 | 250,000 | 500 | 500× |
## Notes
This pattern is a textbook dedup-via-list antipattern. The fix preserves the exact return type (`List<String>`) and insertion ordering while eliminating the O(A²) scan cost. `transformAuthorities` is called from `AclPermissionUtil.isGlobalAdmin`, `getCurrentUserGroups`, and several REST filter chains — each serving incoming HTTP requests.

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defects/pulsar/patch/pulsar-0006-partial-round-robin-router-partition-list-quadratic.md Normal file
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# UNDF: UNDF-2026-000000026
# UNDF: (pending)
# pulsar-0006: PartialRoundRobinMessageRouterImpl.getOrCreatePartialList — O(P²) CopyOnWriteArrayList.contains during partition expansion
## CWE-407 — Algorithmic Complexity
| Field | Value |
|-------|-------|
| ID | pulsar-0006 |
| Severity | MEDIUM |
| Ecosystem | Apache Pulsar |
| Package | `org.apache.pulsar.client.impl.customroute` |
| File | `pulsar-client/src/main/java/org/apache/pulsar/client/impl/customroute/PartialRoundRobinMessageRouterImpl.java` |
| Lines | 72–78 |
| Complexity | O(P²) — CopyOnWriteArrayList.contains called per element of IntStream.range(0, numPartitions) |
| Hot path | Triggered every time a Pulsar topic adds partitions while a producer using this router is active (partition expansion event) |
## Defect
```java
// partialList is CopyOnWriteArrayList<Integer>
private final List<Integer> partialList = new CopyOnWriteArrayList<>();
private List<Integer> getOrCreatePartialList(TopicMetadata metadata) {
if (partialList.isEmpty()
|| partialList.size() < numPartitionsLimit
&& partialList.size() < metadata.numPartitions()) {
synchronized (this) {
// ...
} else if (partialList.size() < numPartitionsLimit
&& partialList.size() < metadata.numPartitions()) {
// DEFECT: stream over all P partition IDs, calling partialList.contains(e)
// for each — O(P) per call × O(P) elements = O(P²)
partialList.addAll(IntStream.range(0, metadata.numPartitions()).boxed()
.filter(e -> !partialList.contains(e)) // O(P) per element
.collect(Collectors.collectingAndThen(Collectors.toList(), list -> {
Collections.shuffle(list);
return list.stream();
})).limit(numPartitionsLimit - partialList.size())
.collect(Collectors.toList()));
}
}
}
return partialList;
}
```
`P` = `metadata.numPartitions()`. Pulsar topics with thousands of partitions are common in high-throughput deployments. CopyOnWriteArrayList.contains is O(N) — there is no hash-based shortcut.
## Fix
```java
// AFTER: snapshot partialList to a HashSet once, then filter in O(1) per element
} else if (partialList.size() < numPartitionsLimit
&& partialList.size() < metadata.numPartitions()) {
Set<Integer> existing = new HashSet<>(partialList); // O(P) one-time build
partialList.addAll(IntStream.range(0, metadata.numPartitions()).boxed()
.filter(e -> !existing.contains(e)) // O(1) per element
.collect(Collectors.collectingAndThen(Collectors.toList(), list -> {
Collections.shuffle(list);
return list.stream();
})).limit(numPartitionsLimit - partialList.size())
.collect(Collectors.toList()));
}
```
## Speedup
| P (total partitions) | Before (ops) | After (ops) | Speedup |
|----------------------|--------------|-------------|---------|
| 100 | 10,000 | 100 | 100× |
| 1,000 | 1,000,000 | 1,000 | 1,000× |
| 4,000 | 16,000,000 | 4,000 | 4,000× |
## Notes
The synchronized block prevents concurrent re-entrancy, but the inner O(P²) work still stalls all threads waiting on the lock during a partition expansion event. In a high-throughput producer this synchronized stall causes a latency spike proportional to P².

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defects/samza/patch/CLEAN.md Normal file
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# CLEAN — Apache Samza
Scanned 2026-03-29 for CWE-407.
## Scope
- `samza-core/src/main/java` — JobGraph, JobNode, IntermediateStreamManager, StandbyContainerManager, BlobStoreUtil, DirDiffUtil
## Findings
| Location | Pattern | Type | Result |
|----------|---------|------|--------|
| `JobGraph.findReachable` | `visited.contains` in BFS | `HashSet<JobNode>` | CLEAN |
| `JobGraph.topologicalSort` | `visited.contains` | `HashSet<JobNode>` | CLEAN |
| `JobNode.findReachableOperators` | `reachableOperators.contains` | `Set<OperatorSpec>` | CLEAN |
| `IntermediateStreamManager.processedStreamSets` | `contains` in stream filter | `HashSet<StreamSet>` | CLEAN |
| `DirDiffUtil.filesToIgnore` | `contains` in stream filter | `Set<String>` parameter | CLEAN |
| `StandbyContainerManager.standbySamzaContainerIds` | `contains` | Field type verified as `Set` | CLEAN |
All graph traversal, BFS, and deduplication patterns use `HashSet` or `Set`-typed collections throughout.
**Result: No actionable CWE-407 defects.**

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defects/solang/patch/solang-0001-emits-events-vec-hashset.md
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# UNDF: UNDF-2026-000000055
# UNDF: (pending)
# solang-0001: add_external_functions emits_events Vec::contains O(F×E²) → O(F×E)

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defects/thrift/patch/CLEAN.md Normal file
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# CLEAN — Apache Thrift
Scanned 2026-03-29 for CWE-407.
## Scope
- `lib/java/src/main/java` — Java runtime library (PartialThriftComparer, TBase implementations)
- `compiler/cpp/src/thrift/parse/` — C++ IDL compiler (t_scope.h, t_program.h, t_const_value.h)
## Findings
| Location | Pattern | Type | Result |
|----------|---------|------|--------|
| `PartialThriftComparer.areEqual` (Set path) | `s2.contains(e1)` in loop over s1 | `s2` is `Set<Object>` (Java Set semantics per Thrift spec) | CLEAN |
| `t_scope.h` | `types_.find`, `services_.find`, `constants_.find` | `std::map` — O(log N) | CLEAN |
| `t_program.h` | namespace lookups | `std::map` | CLEAN |
| `contrib/thrift-maven-plugin` | `thriftPathElements.contains` | Called once per directory during classpath building, not in hot loop | LOW |
The Java library is minimal and the C++ compiler uses `std::map` (ordered map, O(log N) find). No quadratic list-membership pattern exists in the production hot path.
**Result: No actionable CWE-407 defects.**

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defects/tinkerpop/patch/CLEAN.md Normal file
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# CLEAN — Apache TinkerPop
Scanned 2026-03-29 for CWE-407.
## Scope
- `gremlin-core/src/main/java` — MatchStep, DisjunctStep, TraversalHelper, PartitionStrategy, FilterRankingStrategy, PathRetractionStrategy
- Graph traversal execution engine
## Findings
| Location | Pattern | Type | Result |
|----------|---------|------|--------|
| `MatchStep.dedups` | `dedups.contains` per traverser | `HashSet<List<Object>>` | CLEAN |
| `MatchStep.traverser.getTags()` | `getTags().contains` per step | `Set<String>` in AbstractTraverser | CLEAN |
| `DisjunctStep.setA / setB` | `setB.contains` / `setA.contains` in loops | Both are `Set<?>` (HashSet impl) | CLEAN |
| `PartitionStrategy.readPartitions` | `readPartitions.contains` per element check | `Set<String>` (unmodifiableSet of HashSet) | CLEAN |
| `CoreImports.unique` (uniqueMethods) | `unique.contains` | `LinkedHashSet<String>` | CLEAN |
| `MatchStep.Helper.computeStartLabel.sort` | `sort.contains` in plan ordering | `ArrayList<String>` — but called once at plan-construction time over label names (N < 20), not per record | LOW — not hot path |
| `TraversalHelper.getSteps().contains` | step membership check | Called once at plan-optimization time | LOW |
All per-record hot-path traversal uses hash-based set types. The `sort` ArrayList in `computeStartLabel` accumulates label strings during query planning (once per query), not during record iteration. With N labels typically in the single digits this is not actionable.
**Result: No actionable CWE-407 defects.**
## Note
Previous scan (project_graphdb_scan.md) also confirmed TinkerPop CLEAN. This scan independently verified the same conclusion with broader coverage of strategy and step classes.