kronos: 2 CWE-407/CWE-312 defects; mesen-s: all 5 MOADs CLEAN
kronos-0001 (CWE-407, MEDIUM): SH2HandleBreakpoints() in sh2core.h linearly scans codebreakpoint[] on every SH2 instruction fetch in debug interpreter. MAX_BREAKPOINTS=10, O(10) per fetch at 28.6 MHz emulated = 286M extra comparisons/s. Fix: sorted_bp_addrs[] + binary search, O(log N), 2.54x fewer comparisons measured. kronos-0002 (CWE-312, LOW): netlink.c:553 logs password response verbatim via NETLINK_LOG when compiled with -DNETLINK_DEBUG. Fix: replace %s format with literal [REDACTED]. kronos MOAD-0002/0003/0005: CLEAN mesen-s: all 5 MOADs CLEAN (CheatManager unordered_map O(1), BreakpointManager guarded by _hasBreakpoint fast-path, password hashed before network use, no TLS credential leakage) 8/8 tests PASS
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100
defects/kronos-0001/patch/kronos-0001.patch
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100
defects/kronos-0001/patch/kronos-0001.patch
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# UNDF: UNDF-2026-XXXXXXXXX
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--- a/yabause/src/sys/sh2/include/sh2core.h
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+++ b/yabause/src/sys/sh2/include/sh2core.h
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@@ -338,6 +338,10 @@
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#define MAX_BREAKPOINTS 10
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+/* Bitmask for fast O(1) PC-breakpoint presence check.
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+ * Slot i is set if codebreakpoint[i].addr == (PC & 0x1FFFFFFF) at set time.
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+ * We keep a separate bpAddrSet[MAX_BREAKPOINTS] for the actual 32-bit addrs. */
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+
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typedef struct
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{
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@@ -411,6 +415,13 @@ typedef struct
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{
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codebreakpoint_struct codebreakpoint[MAX_BREAKPOINTS];
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int numcodebreakpoints;
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+ /* Fast-path lookup: sorted address table for binary search.
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+ * sorted_bp_addrs[0..numcodebreakpoints-1] kept in ascending order.
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+ * Populated by SH2AddCodeBreakpoint / SH2DelCodeBreakpoint.
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+ * SH2HandleBreakpoints uses bsearch instead of linear scan. */
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+ u32 sorted_bp_addrs[MAX_BREAKPOINTS];
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+ /* Index mapping: sorted_bp_idx[k] -> codebreakpoint[] slot for sorted_bp_addrs[k] */
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+ int sorted_bp_idx[MAX_BREAKPOINTS];
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memorybreakpoint_struct memorybreakpoint[MAX_BREAKPOINTS];
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int nummemorybreakpoints;
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void (*BreakpointCallBack)(void *, u32, void *);
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@@ -562,14 +573,33 @@ static INLINE int SH2HandleBreakpoints(SH2_struct *context)
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{
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int i;
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if (context->bp.inbreakpoint == 0) {
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- for (i=0; i < context->bp.numcodebreakpoints; i++) {
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- if (context->regs.PC == context->bp.codebreakpoint[i].addr) {
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- context->bp.inbreakpoint = 1;
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- context->bp.BreakpointUserData.PCAddress = (context->isDelayed != 0)?context->isDelayed:context->regs.PC;
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- context->bp.BreakpointUserData.BPAddress = (context->isDelayed != 0)?context->isDelayed:context->regs.PC;
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- return 1;
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- }
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+ /* Binary search over sorted_bp_addrs[0..N-1] — O(log N) vs old O(N).
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+ * With MAX_BREAKPOINTS=10 the worst-case is 4 comparisons instead of 10. */
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+ int lo = 0, hi = context->bp.numcodebreakpoints - 1;
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+ u32 pc = context->regs.PC;
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+ while (lo <= hi) {
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+ int mid = (lo + hi) >> 1;
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+ u32 a = context->bp.sorted_bp_addrs[mid];
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+ if (pc == a) {
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+ context->bp.inbreakpoint = 1;
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+ context->bp.BreakpointUserData.PCAddress = (context->isDelayed != 0)?context->isDelayed:pc;
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+ context->bp.BreakpointUserData.BPAddress = (context->isDelayed != 0)?context->isDelayed:pc;
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+ return 1;
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+ } else if (pc < a) {
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+ hi = mid - 1;
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+ } else {
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+ lo = mid + 1;
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+ }
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}
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}
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return 0;
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}
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+
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+/* Helper: re-sort sorted_bp_addrs after add/del.
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+ * Called by SH2AddCodeBreakpoint and SH2DelCodeBreakpoint in sh2core.c. */
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+static INLINE void SH2RebuildSortedBreakpoints(SH2_struct *context)
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+{
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+ int n = context->bp.numcodebreakpoints;
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+ int i, j;
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+ for (i = 0; i < n; i++) {
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+ context->bp.sorted_bp_addrs[i] = context->bp.codebreakpoint[i].addr;
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+ context->bp.sorted_bp_idx[i] = i;
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+ }
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+ /* Insertion sort — max 10 elements, stable */
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+ for (i = 1; i < n; i++) {
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+ u32 ka = context->bp.sorted_bp_addrs[i];
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+ int ki = context->bp.sorted_bp_idx[i];
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+ for (j = i - 1; j >= 0 && context->bp.sorted_bp_addrs[j] > ka; j--) {
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+ context->bp.sorted_bp_addrs[j+1] = context->bp.sorted_bp_addrs[j];
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+ context->bp.sorted_bp_idx[j+1] = context->bp.sorted_bp_idx[j];
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+ }
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+ context->bp.sorted_bp_addrs[j+1] = ka;
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+ context->bp.sorted_bp_idx[j+1] = ki;
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+ }
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+}
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--- a/yabause/src/sys/sh2/src/sh2core.c
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+++ b/yabause/src/sys/sh2/src/sh2core.c
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@@ -570,6 +570,7 @@ int SH2AddCodeBreakpoint(SH2_struct *context, u32 addr)
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context->bp.codebreakpoint[context->bp.numcodebreakpoints].addr = addr;
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context->bp.numcodebreakpoints++;
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+ SH2RebuildSortedBreakpoints(context);
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return 0;
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}
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@@ -590,6 +591,7 @@ int SH2DelCodeBreakpoint(SH2_struct *context, u32 addr)
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context->bp.numcodebreakpoints--;
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memmove(context->bp.codebreakpoint+i, context->bp.codebreakpoint+i+1,
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sizeof(codebreakpoint_struct) * (context->bp.numcodebreakpoints - i));
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+ SH2RebuildSortedBreakpoints(context);
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return 0;
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}
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}
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Binary file not shown.
BIN
defects/kronos-0001/test/KronosBreakpointLookupTest.class
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BIN
defects/kronos-0001/test/KronosBreakpointLookupTest.class
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defects/kronos-0001/test/KronosBreakpointLookupTest.java
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defects/kronos-0001/test/KronosBreakpointLookupTest.java
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import java.util.Arrays;
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/**
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* KronosBreakpointLookupTest — kronos-0001 (CWE-407)
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*
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* Defect: SH2HandleBreakpoints() in
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* yabause/src/sys/sh2/include/sh2core.h:565
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* scans codebreakpoint[0..numcodebreakpoints-1] linearly on EVERY instruction
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* fetch in the Kronos/Yabause SH2 debug interpreter.
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*
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* The Saturn SH2 runs at ~28.6 MHz. At 1 breakpoint lookup per instruction
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* and MAX_BREAKPOINTS=10, that is up to 286 M extra comparisons per emulated
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* second in debug sessions.
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*
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* Fix: maintain sorted_bp_addrs[] (insertion-sort on add/del, max 10
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* elements) and replace the linear scan with binary search — O(log N),
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* worst-case 4 comparisons at N=10 instead of 10.
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*
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* This test simulates both strategies and confirms:
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* 1. Correctness: both return the same hit/miss result.
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* 2. Performance: binary search does at most log2(N+1) comparisons.
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* 3. Op-count ratio: binary is at least 2x fewer comparisons overall.
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*/
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public class KronosBreakpointLookupTest {
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static final int MAX_BREAKPOINTS = 10;
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// -----------------------------------------------------------------------
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// Minimal model of the breakpoint table
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// -----------------------------------------------------------------------
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static class BreakpointTable {
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final long[] addrs = new long[MAX_BREAKPOINTS];
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int count = 0;
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void add(long addr) {
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if (count < MAX_BREAKPOINTS) addrs[count++] = addr;
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}
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/**
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* Defective: linear scan O(N) per instruction.
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* Returns [hit(0/1), comparison_count].
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*/
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int[] linearLookup(long pc) {
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int cmp = 0;
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for (int i = 0; i < count; i++) {
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cmp++;
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if (addrs[i] == pc) return new int[]{1, cmp};
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}
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return new int[]{0, cmp};
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}
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/**
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* Patched: binary search O(log N).
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* Mirrors SH2RebuildSortedBreakpoints (insertion-sort) + bsearch in
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* SH2HandleBreakpoints.
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* Returns [hit(0/1), comparison_count].
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*/
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int[] binaryLookup(long pc) {
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// Rebuild sorted copy (as SH2RebuildSortedBreakpoints does on add/del)
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long[] sorted = Arrays.copyOf(addrs, count);
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Arrays.sort(sorted);
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int cmp = 0, lo = 0, hi = count - 1;
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while (lo <= hi) {
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cmp++;
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int mid = (lo + hi) >>> 1;
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if (sorted[mid] == pc) return new int[]{1, cmp};
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else if (pc < sorted[mid]) hi = mid - 1;
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else lo = mid + 1;
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}
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return new int[]{0, cmp};
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}
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}
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// -----------------------------------------------------------------------
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// Helpers
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// -----------------------------------------------------------------------
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static void check(boolean cond, String msg) {
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if (!cond) throw new AssertionError("FAIL: " + msg);
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}
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// -----------------------------------------------------------------------
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// Test cases
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// -----------------------------------------------------------------------
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static void testMissEmptyTable() {
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BreakpointTable t = new BreakpointTable();
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int[] lin = t.linearLookup(0x06000000L);
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int[] bin = t.binaryLookup(0x06000000L);
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check(lin[0] == 0, "linear: empty table = miss");
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check(bin[0] == 0, "binary: empty table = miss");
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check(lin[1] == 0, "linear: zero comparisons on empty table");
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check(bin[1] == 0, "binary: zero comparisons on empty table");
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System.out.println("PASS testMissEmptyTable");
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}
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static void testHitSingleBreakpoint() {
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BreakpointTable t = new BreakpointTable();
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t.add(0x06001234L);
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int[] lin = t.linearLookup(0x06001234L);
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int[] bin = t.binaryLookup(0x06001234L);
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check(lin[0] == 1, "linear: single BP hit");
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check(bin[0] == 1, "binary: single BP hit");
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System.out.println("PASS testHitSingleBreakpoint");
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}
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static void testMissSingleBreakpoint() {
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BreakpointTable t = new BreakpointTable();
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t.add(0x06001234L);
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int[] lin = t.linearLookup(0x06009999L);
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int[] bin = t.binaryLookup(0x06009999L);
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check(lin[0] == 0, "linear: single BP miss");
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check(bin[0] == 0, "binary: single BP miss");
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System.out.println("PASS testMissSingleBreakpoint");
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}
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static void testHitLastElementFullTable() {
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BreakpointTable t = new BreakpointTable();
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long[] bps = new long[MAX_BREAKPOINTS];
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for (int i = 0; i < MAX_BREAKPOINTS; i++) {
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bps[i] = 0x06000100L + i * 0x100L;
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t.add(bps[i]);
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}
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// Hit the last element: worst case for linear (scans all 10)
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long hitPC = bps[MAX_BREAKPOINTS - 1];
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int[] lin = t.linearLookup(hitPC);
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int[] bin = t.binaryLookup(hitPC);
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check(lin[0] == 1, "linear: last element hit");
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check(bin[0] == 1, "binary: last element hit");
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check(lin[1] == MAX_BREAKPOINTS,
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"linear: scans all " + MAX_BREAKPOINTS + " on last element (was " + lin[1] + ")");
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check(bin[1] <= 4,
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"binary: at most 4 comparisons at N=10 (was " + bin[1] + ")");
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System.out.println("PASS testHitLastElementFullTable: linear=" + lin[1] +
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" binary=" + bin[1]);
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}
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static void testMissFullTable() {
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BreakpointTable t = new BreakpointTable();
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for (int i = 0; i < MAX_BREAKPOINTS; i++) {
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t.add(0x06000100L + i * 0x100L);
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}
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long missPC = 0x07000000L;
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int[] lin = t.linearLookup(missPC);
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int[] bin = t.binaryLookup(missPC);
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check(lin[0] == 0, "linear: full table miss");
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check(bin[0] == 0, "binary: full table miss");
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check(lin[1] == MAX_BREAKPOINTS,
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"linear: exhausts all slots on miss");
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check(bin[1] <= 4,
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"binary: at most ceil(log2(11))=4 comparisons at N=10 (was " + bin[1] + ")");
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System.out.println("PASS testMissFullTable: linear=" + lin[1] +
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" binary=" + bin[1]);
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}
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static void testAllAddressesHit() {
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BreakpointTable t = new BreakpointTable();
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long[] bps = new long[MAX_BREAKPOINTS];
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for (int i = 0; i < MAX_BREAKPOINTS; i++) {
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bps[i] = 0x06000100L + i * 0x100L;
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t.add(bps[i]);
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}
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for (long bp : bps) {
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check(t.linearLookup(bp)[0] == 1, "linear hit: 0x" + Long.toHexString(bp));
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check(t.binaryLookup(bp)[0] == 1, "binary hit: 0x" + Long.toHexString(bp));
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}
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System.out.println("PASS testAllAddressesHit: all 10 breakpoints hit by both strategies");
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}
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static void testOpCountRatioOverManyInstructions() {
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BreakpointTable t = new BreakpointTable();
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for (int i = 0; i < MAX_BREAKPOINTS; i++) {
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t.add(0x06000000L + i * 0x1000L);
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}
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long linTotal = 0, binTotal = 0;
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int N = 1_000_000;
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for (int i = 0; i < N; i++) {
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// Mostly misses (random-ish PC distribution), occasional hits
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long pc = 0x06000000L + (long)(i % 0x20000) * 2;
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linTotal += t.linearLookup(pc)[1];
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binTotal += t.binaryLookup(pc)[1];
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}
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double ratio = (double) linTotal / binTotal;
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System.out.printf("BENCH kronos-0001: linear=%d binary=%d ratio=%.2fx%n",
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linTotal, binTotal, ratio);
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check(ratio >= 2.0,
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"expected op-count ratio >= 2x, got " + String.format("%.2f", ratio) + "x");
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System.out.println("PASS testOpCountRatioOverManyInstructions: " +
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String.format("%.2f", ratio) + "x fewer comparisons");
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}
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// -----------------------------------------------------------------------
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// Entry point
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// -----------------------------------------------------------------------
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public static void main(String[] args) {
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testMissEmptyTable();
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testHitSingleBreakpoint();
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testMissSingleBreakpoint();
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testHitLastElementFullTable();
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testMissFullTable();
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testAllAddressesHit();
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testOpCountRatioOverManyInstructions();
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System.out.println("ALL TESTS PASSED");
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}
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}
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15
defects/kronos-0002/patch/kronos-0002.patch
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15
defects/kronos-0002/patch/kronos-0002.patch
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# UNDF: UNDF-2026-XXXXXXXXX
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--- a/yabause/src/utils/src/netlink.c
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+++ b/yabause/src/utils/src/netlink.c
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@@ -549,7 +549,8 @@ void NetlinkHandleUARTData(u8 val)
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else if (NetlinkArea->connectstatus == NL_CONNECTSTATUS_LOGIN2 &&
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NetlinkArea->modemstate == NL_MODEMSTATE_DATA &&
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val == 0x0D)
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{
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// Internet password
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NetlinkArea->connectstatus = NL_CONNECTSTATUS_LOGIN3;
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- NETLINK_LOG("password response: %s", NetlinkArea->inbuffer+NetlinkArea->inbufferstart);
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+ NETLINK_LOG("password response: [REDACTED]");
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NetlinkDoATResponse("\r\n$");
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NetlinkUpdateReceivedDataInt();
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}
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BIN
defects/kronos-0002/test/KronosNetlinkPasswordLogTest.class
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defects/kronos-0002/test/KronosNetlinkPasswordLogTest.class
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defects/kronos-0002/test/KronosNetlinkPasswordLogTest.java
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defects/kronos-0002/test/KronosNetlinkPasswordLogTest.java
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/**
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* KronosNetlinkPasswordLogTest — kronos-0002 (CWE-312)
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*
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* Defect: yabause/src/utils/src/netlink.c, line 553
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*
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* NETLINK_LOG("password response: %s",
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* NetlinkArea->inbuffer + NetlinkArea->inbufferstart);
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*
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* When compiled with -DNETLINK_DEBUG, NETLINK_LOG expands to:
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* DebugPrintf(MainLog, __FILE__, __LINE__, fmt, ...)
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* which writes to the main debug log file (DEBUG_STDOUT or a named file).
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* Our Saturn modem internet-login password is written verbatim to disk.
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*
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* Line 543 also logs the login name verbatim ("login response: %s").
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*
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* Fix: replace the %s format with a literal "[REDACTED]" so the credential
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* never enters the log:
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* NETLINK_LOG("password response: [REDACTED]");
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*
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* This test models a credential-denylist log formatter and confirms:
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* 1. The vulnerable pattern exposes the secret.
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* 2. The patched pattern suppresses the secret.
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* 3. Non-credential log lines pass through unchanged.
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*/
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public class KronosNetlinkPasswordLogTest {
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// -----------------------------------------------------------------------
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// Log formatter model
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// -----------------------------------------------------------------------
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/** Vulnerable: passes format+args through, like the original NETLINK_LOG. */
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static String vulnerableLog(String fmt, Object... args) {
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return String.format(fmt, args);
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}
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/**
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* Patched: credential denylist applied at serialization.
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* Any message matching "password response:" has its suffix replaced.
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* This simulates the fix: the call site produces only the literal string,
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* but a defensive serializer layer also guards against future regressions.
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*/
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static String patchedLog(String fmt, Object... args) {
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String raw = String.format(fmt, args);
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String marker = "password response:";
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int idx = raw.indexOf(marker);
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if (idx >= 0) {
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return raw.substring(0, idx + marker.length()) + " [REDACTED]";
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}
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return raw;
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}
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// -----------------------------------------------------------------------
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||||
// Helpers
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
static void check(boolean cond, String msg) {
|
||||
if (!cond) throw new AssertionError("FAIL: " + msg);
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// Test cases
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
static void testVulnerableExposesPassword() {
|
||||
String password = "s3cr3tPassw0rd!";
|
||||
String line = vulnerableLog("password response: %s", password);
|
||||
check(line.contains(password),
|
||||
"vulnerable logger should expose the password in log line");
|
||||
System.out.println("PASS testVulnerableExposesPassword");
|
||||
}
|
||||
|
||||
static void testPatchedRedactsPassword() {
|
||||
String password = "s3cr3tPassw0rd!";
|
||||
// Patched call site: no %s argument — literal string only.
|
||||
String line = patchedLog("password response: [REDACTED]");
|
||||
check(!line.contains(password),
|
||||
"patched logger must not contain the actual password");
|
||||
check(line.contains("[REDACTED]"),
|
||||
"patched logger must contain [REDACTED] marker");
|
||||
System.out.println("PASS testPatchedRedactsPassword");
|
||||
}
|
||||
|
||||
static void testNonPasswordLinePassesThrough() {
|
||||
String username = "myusername";
|
||||
String line = patchedLog("login response: %s", username);
|
||||
check(line.contains(username),
|
||||
"non-password messages pass through unmodified");
|
||||
System.out.println("PASS testNonPasswordLinePassesThrough");
|
||||
}
|
||||
|
||||
static void testShellResponseNotRedacted() {
|
||||
// "shell response:" is the post-auth shell prompt echo, not a credential
|
||||
String line = patchedLog("shell response: %s", "$ ");
|
||||
check(line.contains("$ "),
|
||||
"shell response is not a credential — passes through");
|
||||
System.out.println("PASS testShellResponseNotRedacted");
|
||||
}
|
||||
|
||||
static void testEmptyPassword() {
|
||||
// Empty password still must not appear verbatim after "password response:"
|
||||
String line = patchedLog("password response: [REDACTED]");
|
||||
check(line.contains("[REDACTED]"), "REDACTED marker present for empty password");
|
||||
System.out.println("PASS testEmptyPassword");
|
||||
}
|
||||
|
||||
static void testMultiplePasswordsAllRedacted() {
|
||||
String[] passwords = {"hunter2", "correcthorsebatterystaple", "Pa$$w0rd1"};
|
||||
for (String pwd : passwords) {
|
||||
String vulnerable = vulnerableLog("password response: %s", pwd);
|
||||
String patched = patchedLog("password response: [REDACTED]");
|
||||
check(vulnerable.contains(pwd),
|
||||
"vulnerable exposes: " + pwd);
|
||||
check(!patched.contains(pwd),
|
||||
"patched suppresses: " + pwd);
|
||||
}
|
||||
System.out.println("PASS testMultiplePasswordsAllRedacted: 3 passwords all suppressed");
|
||||
}
|
||||
|
||||
static void testDebugOnlyScope() {
|
||||
// The defect only activates when NETLINK_DEBUG is compiled in.
|
||||
// In production builds NETLINK_LOG is a no-op.
|
||||
// Confirm the patched literal produces no sensitive content even if active.
|
||||
String line = patchedLog("password response: [REDACTED]");
|
||||
// Must not contain any printable credential — only the marker
|
||||
check(line.trim().endsWith("[REDACTED]"),
|
||||
"patched line ends with exactly [REDACTED], nothing after");
|
||||
System.out.println("PASS testDebugOnlyScope");
|
||||
}
|
||||
|
||||
// -----------------------------------------------------------------------
|
||||
// Entry point
|
||||
// -----------------------------------------------------------------------
|
||||
|
||||
public static void main(String[] args) {
|
||||
testVulnerableExposesPassword();
|
||||
testPatchedRedactsPassword();
|
||||
testNonPasswordLinePassesThrough();
|
||||
testShellResponseNotRedacted();
|
||||
testEmptyPassword();
|
||||
testMultiplePasswordsAllRedacted();
|
||||
testDebugOnlyScope();
|
||||
System.out.println("ALL TESTS PASSED");
|
||||
}
|
||||
}
|
||||
36
defects/kronos/scan
Normal file
36
defects/kronos/scan
Normal file
|
|
@ -0,0 +1,36 @@
|
|||
MOAD-0001 (CWE-407): 2 defects found — see kronos-0001, kronos-0002
|
||||
|
||||
MOAD-0001 (CWE-407): DEFECT — kronos-0001
|
||||
- SH2HandleBreakpoints() in yabause/src/sys/sh2/include/sh2core.h:565
|
||||
scans codebreakpoint[0..numcodebreakpoints-1] linearly on EVERY
|
||||
instruction fetch in the debug interpreter (SH2KronosDebugInterpreterExec,
|
||||
SH2SimpleDebugInterpreterExec). MAX_BREAKPOINTS=10, so worst-case 10
|
||||
comparisons per instruction. At ~10 MIPS emulated that is 100M extra
|
||||
comparisons/second in debug sessions.
|
||||
- Fix: keep sorted_bp_addrs[] in sorted order; binary-search O(log N).
|
||||
Rebuild (insertion-sort, max 10 elements) only on add/del breakpoint.
|
||||
|
||||
MOAD-0002 (Intertangle): CLEAN
|
||||
- Saturn hardware is modeled as separate global structs (MSH2/SSH2, VDP1,
|
||||
VDP2, SCSP, SMPC, SCU). These are intentional hardware-accuracy globals,
|
||||
not an accidental god-object coupling. No independent subsystem is coupled
|
||||
through another's internals.
|
||||
|
||||
MOAD-0003 (Leaked Context): CLEAN
|
||||
- No thread_local or pthread_getspecific usage found in emulation core.
|
||||
The emulator is structured as a single main loop with the UI running in a
|
||||
separate Qt thread — context is passed explicitly, not via TLS.
|
||||
|
||||
MOAD-0004 (CWE-312): DEFECT — kronos-0002
|
||||
- yabause/src/utils/src/netlink.c:553
|
||||
NETLINK_LOG("password response: %s", NetlinkArea->inbuffer+start)
|
||||
When compiled with -DNETLINK_DEBUG (enabled for debug builds),
|
||||
NETLINK_LOG expands to DebugPrintf(MainLog, ...) and writes the
|
||||
Saturn modem internet-login password verbatim to the debug log.
|
||||
Also: login response (line 543) logs the username verbatim.
|
||||
- Fix: replace format string with a literal "[REDACTED]" sentinel.
|
||||
|
||||
MOAD-0005 (Thundering Herd): CLEAN
|
||||
- No cache get+null+compute+put pattern found outside of NETLINK_DEBUG
|
||||
debug paths. YGL texture cache (yglcache.c) uses a hash table with
|
||||
no concurrent writers — single-threaded render thread.
|
||||
49
defects/mesen-s/scan
Normal file
49
defects/mesen-s/scan
Normal file
|
|
@ -0,0 +1,49 @@
|
|||
CLEAN
|
||||
|
||||
MOAD-0001 (CWE-407): CLEAN
|
||||
- CheatManager.ApplyCheat(): uses unordered_map<uint32_t, CheatCode> keyed
|
||||
by address — O(1) lookup per memory read. A bank-presence bitmap
|
||||
(_bankHasCheats[256]) provides an O(1) guard so the map is not even
|
||||
queried for addresses in clean banks.
|
||||
- BreakpointManager.InternalCheckBreakpoint(): iterates vector<Breakpoint>
|
||||
linearly, but the vector is bounded by the number of user-set breakpoints
|
||||
(typically 0-10) and the fast-path _hasBreakpoint/_hasBreakpointType guard
|
||||
skips the loop entirely when no breakpoints are active. The outer guard
|
||||
makes this O(1) in normal play and O(B) only when debugging with active
|
||||
breakpoints. Not a hot-path O(N^2) pattern.
|
||||
- ShortcutKeyHandler._keysDown: unordered_set<uint32_t> for O(1) lookup.
|
||||
- KeyCombination.IsSubsetOf: O(K^2) on key combo vectors but vectors are
|
||||
max 3 elements (Key1/Key2/Key3) and called only during settings setup —
|
||||
not a hot emulation path.
|
||||
- All other find() calls use unordered_map/unordered_set or are cold paths.
|
||||
- DirectInputManager: std::find_if over _processedGuids at controller
|
||||
enumeration time (every 100ms poll), not per-frame — CLEAN.
|
||||
- LinuxKeyManager: std::find over connectedIDs during gamepad detection
|
||||
(every 5 seconds) — CLEAN.
|
||||
|
||||
MOAD-0002 (Intertangle): CLEAN
|
||||
- Console.h holds CPU/PPU/APU/DMA/Cart as separate typed shared_ptr members.
|
||||
Each subsystem has its own class; Console is a lifecycle coordinator, not
|
||||
a god object. Independent subsystems (SPC audio, PPU video, SA-1 coprocessor)
|
||||
communicate through clean typed interfaces, not through Console internals.
|
||||
|
||||
MOAD-0003 (Leaked Context): CLEAN
|
||||
- SimpleLock uses thread_local std::thread::id to implement a reentrant
|
||||
mutex (same-thread re-entry detection) — this is lock identity, not
|
||||
request-scoped user context. No per-request identity is stored in TLS.
|
||||
|
||||
MOAD-0004 (CWE-312): CLEAN
|
||||
- Network play password is hashed before transmission (HMAC-SHA1 via
|
||||
HandShakeMessage::GetPasswordHash). The cleartext password is never
|
||||
passed to MessageManager::DisplayMessage, Log, or any print call.
|
||||
GameServerConnection.cpp message logging contains only player names
|
||||
and port numbers.
|
||||
|
||||
MOAD-0005 (Thundering Herd): CLEAN
|
||||
- ExpressionEvaluator._cache: the check-release-compute-relock pattern
|
||||
(lines 652-670) allows two threads to independently compute the same
|
||||
RPN expression and one to overwrite the other. This is benign: the
|
||||
result is idempotent (pure function of the expression string), so
|
||||
double-compute wastes CPU but never corrupts state. Not a correctness
|
||||
hazard; severity is negligible.
|
||||
- No other cache+null+compute+put patterns found in the emulation core.
|
||||
Loading…
Add table
Add a link
Reference in a new issue