Index: src/btree.c ================================================================== --- src/btree.c +++ src/btree.c @@ -6661,13 +6661,20 @@ ** if it returns successfully */ assert( idx >= 0 ); assert( idx >= pPage->cellOffset+2*pPage->nCell+2 || CORRUPT_DB ); assert( idx+sz <= (int)pPage->pBt->usableSize ); pPage->nFree -= (u16)(2 + sz); - memcpy(&data[idx], pCell, sz); if( iChild ){ + /* In a corrupt database where an entry in the cell index section of + ** a btree page has a value of 3 or less, the pCell value might point + ** as many as 4 bytes in front of the start of the aData buffer for + ** the source page. Make sure this does not cause problems by not + ** reading the first 4 bytes */ + memcpy(&data[idx+4], pCell+4, sz-4); put4byte(&data[idx], iChild); + }else{ + memcpy(&data[idx], pCell, sz); } pIns = pPage->aCellIdx + i*2; memmove(pIns+2, pIns, 2*(pPage->nCell - i)); put2byte(pIns, idx); pPage->nCell++;