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Merge branch 'changecontrol-text-overflow-fix' into 'master'

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Resolve buffer overflow crash when configuring System Menu and GIF controls

See merge request STJr/SRB2!445
This commit is contained in:
Digiku 2019-01-04 19:39:17 -05:00
commit d5870e6f8a
1 changed files with 7 additions and 4 deletions
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11
src/m_menu.c
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@ -7516,7 +7516,7 @@ static void M_DrawControl(void)
}
static INT32 controltochange;
static char controltochangetext[55];
static char controltochangetext[33];
static void M_ChangecontrolResponse(event_t *ev)
{
@ -7588,7 +7588,8 @@ static void M_ChangecontrolResponse(event_t *ev)
}
else if (ch == KEY_PAUSE)
{
static char tmp[155];
// This buffer assumes a 125-character message plus a 32-character control name (per controltochangetext buffer size)
static char tmp[158];
menu_t *prev = currentMenu->prevMenu;
if (controltochange == gc_pause)
@ -7612,12 +7613,14 @@ static void M_ChangecontrolResponse(event_t *ev)
static void M_ChangeControl(INT32 choice)
{
static char tmp[55];
// This buffer assumes a 35-character message (per below) plus a max control name limit of 32 chars (per controltochangetext)
// If you change the below message, then change the size of this buffer!
static char tmp[68];
controltochange = currentMenu->menuitems[choice].alphaKey;
sprintf(tmp, M_GetText("Hit the new key for\n%s\nESC for Cancel"),
currentMenu->menuitems[choice].text);
strncpy(controltochangetext, currentMenu->menuitems[choice].text, 55);
strlcpy(controltochangetext, currentMenu->menuitems[choice].text, 33);
M_StartMessage(tmp, M_ChangecontrolResponse, MM_EVENTHANDLER);
}