Public bug reported:
Ubuntu version: 18.04
ncurses version:6.1
Hello,I found some potential bugs in package ncurses-6.1 .Would you help
me check whether the bugs mentioned below are true? Thank you very much
for your patience.
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/tinfo/lib_data.c , function
_nc_screen_of line 287 :
Select the false branch at this point (win!=null is false)
step 2 :
In file ncurses-6.1/ncurses/tinfo/lib_data.c , function
_nc_screen_of line 290 :
null assigned to sp reaches here
step 3 :
In file ncurses-6.1/ncurses/tinfo/lib_data.c , function
_nc_screen_of line 290 :
Return sp to caller, which can be null
step 4 :
In file ncurses-6.1/ncurses/base/resizeterm.c , function
adjust_window line 218 :
Function _nc_screen_of executes and returns
step 5 :
In file ncurses-6.1/ncurses/base/resizeterm.c , function
adjust_window line 218 :
Load value from _nc_screen_of(win)->_topstolen
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function _nc_panelhook
line 42 :
Select the false branch at this point (SP!=null is false)
step 2 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function _nc_panelhook
line 40 :
Return null to caller
step 3 :
In file ncurses-6.1/panel/p_new.c , function root_panel line 56 :
Function _nc_panelhook executes and stores the return value to
ph (ph can be null)
step 4 :
In file ncurses-6.1/panel/p_new.c , function root_panel line 62 :
Load value from ph->stdscr_pseudo_panel
（_nc_stdscr_pseudo_panel is defined in panel.priv.h）
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function _nc_panelhook
line 42 :
Select the false branch at this point (SP!=null is false)
step 2 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function _nc_panelhook
line 40 :
Return null to caller
step 3 :
In file ncurses-6.1/panel/p_move.c , function move_panel line 51 :
Function _nc_panelhook_sp executes and stores the return value
to ph (ph can be null)
in file panel.priv.h(#define GetHook(pan) SCREEN* sp =
_nc_screen_of(pan->win); )
step 4 :
In file ncurses-6.1/panel/p_move.c , function move_panel line 52 :
Load value from ph->bottom_panel
in file panel.priv.h(#define IS_LINKED(p) (((p)->above ||
(p)->below ||((p)==_nc_bottom_panel)) ? TRUE : FALSE))
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/tinfo/lib_data.c , function
_nc_screen_of line 287 :
Select the false branch at this point (win!=null is false)
step 2 :
In file ncurses-6.1/ncurses/tinfo/lib_data.c , function
_nc_screen_of line 290 :
null assigned to sp reaches here
step 3 :
In file ncurses-6.1/ncurses/tinfo/lib_data.c , function
_nc_screen_of line 290 :
Return sp to caller, which can be null
step 4 :
In file ncurses-6.1/menu/m_sub.c , function set_menu_sub line 68 :
Function _nc_screen_of executes and stores the return value to
sp (sp can be null)
step 5 :
In file ncurses-6.1/menu/m_sub.c , function set_menu_sub line 70 :
Load value from sp->_stdscr
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 42 :
Select the false branch at this point (SP!=null is false)
step 2 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 40 :
Return null to caller
step 3 :
In file ncurses-6.1/panel/p_hide.c , function hide_panel line 50 :
Function _nc_panelhook_sp executes and stores the return value
to ph (ph can be null)
in file panel.priv.h(#define GetHook(pan) SCREEN* sp =
_nc_screen_of(pan->win); )
step 4 :
In file ncurses-6.1/panel/p_hide.c , function hide_panel line 55 :
Load value from ph->bottom_panel and assign to pan
HIDE_PANEL is defined in file panel.priv.h
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 42 :
Select the false branch at this point (SP!=null is false)
step 2 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 40 :
Return null to caller
step 3 :
In file ncurses-6.1/panel/p_new.c , function new_panel line 96 :
Function _nc_panelhook_sp executes and stores the return value
to ph (ph can be null)
GetWindowHook is defined in panel.priv.h
step 4 :
In file ncurses-6.1/panel/p_new.c , function new_panel line 103 :
Load value from ph->stdscr_pseudo_panel
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 42 :
Select the false branch at this point (SP!=null is false)
step 2 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 40 :
Return null to caller
step 3 :
In file ncurses-6.1/panel/p_move.c , function move_panel line 51 :
Function _nc_panelhook_sp executes and stores the return value
to ph (ph can be null)
GetHook is defined panel.priv.h
step 4 :
In file ncurses-6.1/panel/p_move.c , function move_panel line 55 :
Load value from ph->bottom_panel and assign to pan
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 42 :
Select the false branch at this point (SP!=null is false)
step 2 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 40 :
Return null to caller
step 3 :
In file ncurses-6.1/panel/p_delete.c , function del_panel line 52
:
Function _nc_panelhook_sp executes and stores the return value
to ph (ph can be null)
GetHook is defined panel.priv.h
step 4 :
In file ncurses-6.1/panel/p_delete.c , function del_panel line 53
:
Load value from ph->bottom_panel
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/tinfo/lib_data.c , function
_nc_screen_of line 287 :
Select the false branch at this point (win!=null is false)
step 2 :
In file ncurses-6.1/ncurses/tinfo/lib_data.c , function
_nc_screen_of line 290 :
null assigned to sp reaches here
step 3 :
In file ncurses-6.1/ncurses/tinfo/lib_data.c , function
_nc_screen_of line 290 :
Return sp to caller, which can be null
step 4 :
In file ncurses-6.1/menu/m_win.c , function set_menu_win line 68 :
Function _nc_screen_of executes and stores the return value to
sp (sp can be null)
step 5 :
In file ncurses-6.1/menu/m_win.c , function set_menu_win line 70 :
Load value from sp->_stdscr
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 42 :
Select the false branch at this point (SP!=null is false)
step 2 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 40 :
Return null to caller
step 3 :
In file ncurses-6.1/panel/p_show.c , function show_panel line 50 :
Function _nc_panelhook_sp executes and stores the return value
to ph (ph can be null)
GetHook is defined panel.priv.h
step 4 :
In file ncurses-6.1/panel/p_show.c , function show_panel line 52 :
Load value from ph->bottom_panel
Is_Top is defined panel.priv.h
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 42 :
Select the false branch at this point (SP!=null is false)
step 2 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 40 :
Return null to caller
step 3 :
In file ncurses-6.1/panel/p_hide.c , function hide_panel line 50 :
Function _nc_panelhook_sp executes and stores the return value
to ph (ph can be null)
GetHook is defined panel.priv.h
step 4 :
In file ncurses-6.1/panel/p_hide.c , function hide_panel line 55 :
Load value from ph->bottom_panel
dBug is defined panel.priv.h
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 42 :
Select the false branch at this point (SP!=null is false)
step 2 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 40 :
Return null to caller
step 3 :
In file ncurses-6.1/panel/p_show.c , function show_panel line 50 :
Function _nc_panelhook_sp executes and stores the return value
to ph (ph can be null)
GetHook is defined panel.priv.h
step 4 :
In file ncurses-6.1/panel/p_show.c , function show_panel line 52 :
Load value from ph->top_panel
Is_Top is defined in panel.priv.h
============================================================================================================
step 1 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 42 :
Select the false branch at this point (SP!=null is false)
step 2 :
In file ncurses-6.1/ncurses/base/nc_panel.c , function
_nc_panelhook_sp line 40 :
Return null to caller
step 3 :
In file ncurses-6.1/panel/p_delete.c , function del_panel line 52
:
Function _nc_panelhook_sp executes and stores the return value
to ph (ph can be null)
GetHook is defined panel.priv.h
step 4 :
In file ncurses-6.1/panel/p_delete.c , function del_panel line 53
:
Load value from ph->bottom_panel and assign to pan
HIDE_PANEL is defined in panel.priv.h
** Affects: ncurses (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1941813
Title:
Several potential bugs of NULL Pointer Dereference
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