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win32u: Make sure that the stack buffer in set_multi_value_key is large enough.

Browse source 
This fixes stack overflows since
edecac8afd.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2022-10-24 10:49:52 +03:00 committed by Alexandre Julliard
parent 7486c4061e
commit 0cb2798125
1 changed files with 8 additions and 1 deletions
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9
dlls/win32u/font.c
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@ -3043,12 +3043,19 @@ static void update_font_association_info(void)
static void set_multi_value_key( HKEY hkey, const WCHAR *name, const char *value, DWORD len )
{
WCHAR valueW[256];
WCHAR *valueW;
if (!(valueW = malloc( len * sizeof(WCHAR) )))
{
ERR( "malloc of %d * WCHAR failed\n", len );
return;
}
ascii_to_unicode( valueW, value, len );
if (value)
set_reg_value( hkey, name, REG_MULTI_SZ, valueW, len * sizeof(WCHAR) );
else if (name)
reg_delete_value( hkey, name );
free( valueW );
}
static void update_font_system_link_info(void)