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defects/sqlite/patch/sqlite-0003-fk-column-resolution.patch

@@ -0,0 +1,33 @@
+diff --git a/src/build.c b/src/build.c
+index abcdef..123456 100644
+--- a/src/build.c
++++ b/src/build.c
+@@ -3680,16 +3680,18 @@ void sqlite3CreateForeignKey(
+   if( pFromCol==0 ){
+     pFKey->aCol[0].iFrom = p->nCol-1;
+   }else{
+     for(i=0; i<nCol; i++){
+-      int j;
+-      for(j=0; j<p->nCol; j++){
+-        if( sqlite3StrICmp(p->aCol[j].zCnName, pFromCol->a[i].zEName)==0 ){
+-          pFKey->aCol[i].iFrom = j;
+-          break;
+-        }
+-      }
+-      if( j>=p->nCol ){
++      /* CWE-407 fix (sqlite-0003, build.c:3680):
++      ** Replace O(p->nCol) sqlite3StrICmp inner loop with O(1) hash-based
++      ** sqlite3ColumnIndex().  The table p->aHx[] is fully populated by
++      ** the time FK clauses are parsed (columns precede REFERENCES in SQL).
++      */
++      int j = sqlite3ColumnIndex(p, pFromCol->a[i].zEName);
++      if( j<0 ){
+         sqlite3ErrorMsg(pParse,
+           "unknown column \"%s\" in foreign key definition",
+           pFromCol->a[i].zEName);
+         goto fk_end;
++      }else{
++        pFKey->aCol[i].iFrom = j;
+       }
+       if( IN_RENAME_OBJECT ){
+         sqlite3RenameTokenRemap(pParse, &pFKey->aCol[i], pFromCol->a[i].zEName);