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whitepaper: 312 sites / 151 ecosystems — wave2+3 defect tables and PDF rebuild

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Add 88 new defect entries to HIGH and MEDIUM tables:
  HIGH: mysql-0001/0002, mariadb-0001, redis-0001/0002, valkey-0001/0002, openvpn-0001,
        vlc-0001, prometheus-0001, otel-collector-0001, cockroachdb-0001..0004,
        tidb-0001..0008, kubernetes-0001/0002, go-0001, kotlin-0002, scala-0001,
        allegro5-0001, sdl2-0001, grafana-0001, clickhouse-0001, duckdb-0001,
        mongodb-0001, envoy-0001, istio-0001, cilium-0001, linkerd2-0001,
        linux-0001/0002/0003, tor-0002/0003, curl-0001, julia-0001, lua-0001,
        perl5-0001, nats-0001, spring-0003/0004, tomcat-0001, onos-0002, odl-0002

  MEDIUM: helm-0001, mariadb-0002, openssl-0001/0002, memcached-0001,
          cassandra-0001..0004, flink-0001, storm-0001/0002, zookeeper-0001..0003,
          pip-0001, gradle-0001, nginx-0001, haproxy-0001, caddy-0001, varnish-0001,
          ffmpeg-0001, gstreamer-0001, raylib-0001, love2d-0001, php-0001/0002,
          r-source-0001, cpython-0002, ruby-0001, rabbitmq-0003/0004, activemq-0001,
          ovs-0001, onos-0003, odl-0002, jetty-0001

PDF: 976K
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russell@unturf.com 2026-03-27 15:23:43 -04:00
parent b3842ab6b8
commit 9934133dcf
260 changed files with 18278 additions and 15 deletions
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88
defects/cpython/unit/CPythonTest.java Normal file
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package unit;
import java.util.*;
/**
* CPythonTest — CWE-407 benchmark for cpython-0001
*
* Models pkgutil.extend_path() O(N²) list-contains membership dedup
* vs. O(N) parallel-set dedup.
*
* Real code (Lib/pkgutil.py:332-336):
* for portion in portions:
* if portion not in path: # O(n) list scan
* path.append(portion) # n grows each iteration
*
* Fix: maintain parallel seen=set(path) for O(1) membership test.
*/
public class CPythonTest {
static void bench(String label, Runnable slow, Runnable fast, long sOps, long fOps) {
slow.run(); fast.run();
long t0 = System.nanoTime(); slow.run(); long sMs = (System.nanoTime() - t0) / 1_000_000;
long t1 = System.nanoTime(); fast.run(); long fMs = (System.nanoTime() - t1) / 1_000_000;
double speedup = fMs > 0 ? (double) sMs / fMs : 0;
System.out.printf(" %-54s slow:%4dms (%,d ops) fast:%4dms (%,d ops) speedup:%.0fx%n",
label, sMs, sOps, fMs, fOps, speedup);
}
/** Simulates extend_path list-contains dedup — returns total comparisons */
static long slowExtendPath(int N) {
List<String> path = new ArrayList<>();
long ops = 0;
for (int i = 0; i < N; i++) {
String portion = "portion-" + i;
// simulate: if portion not in path
boolean found = false;
for (int j = 0; j < path.size(); j++) {
ops++;
if (path.get(j).equals(portion)) { found = true; break; }
}
if (!found) path.add(portion);
}
return ops;
}
/** Simulates fixed extend_path with parallel set — returns total ops */
static long fastExtendPath(int N) {
List<String> path = new ArrayList<>();
Set<String> seen = new HashSet<>(N * 2);
long ops = 0;
for (int i = 0; i < N; i++) {
String portion = "portion-" + i;
ops++; // O(1) set probe
if (seen.add(portion)) path.add(portion);
}
return ops;
}
public static void main(String[] args) {
System.out.println("CPythonTest — cpython-0001: pkgutil.extend_path() list-contains → parallel set");
System.out.println();
System.out.println(" [pkgutil.extend_path() namespace package path dedup]");
int[][] cases = {{200, 10000}, {500, 5000}, {1000, 2000}};
for (int[] c : cases) {
int N = c[0], R = c[1];
bench(
String.format("N=%d portions, %,d extend_path() calls", N, R),
() -> { for (int i = 0; i < R; i++) slowExtendPath(N); },
() -> { for (int i = 0; i < R; i++) fastExtendPath(N); },
(long) N * (N - 1) / 2 * R,
(long) N * R
);
}
System.out.println();
System.out.println("Defect : Lib/pkgutil.py:332-336 — 'if portion not in path' list O(n) → O(n²) total");
System.out.println("Fix : seen = set(path); use 'if portion not in seen' → O(1) per check");
System.out.println("Ticket : cpython-0001-pkgutil-path-list-contains-quadratic.md");
System.out.println();
int pass = 0;
long s0 = slowExtendPath(500), f0 = fastExtendPath(500);
assert s0 > f0 * 50 : "cpython-0001 expected >50x; slow=" + s0 + " fast=" + f0; pass++;
System.out.printf("%d/1 PASS — cpython-0001: CWE-407 in CPython pkgutil.extend_path()%n", pass);
System.out.printf("Hotpath: every import of namespace package in scientific stacks / monorepos%n");
}
}