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ntdll: Don't access empty IMAGE_FILE_IMPORT_DIRECTORY. 

Signed-off-by: Kevin Puetz <PuetzKevinA@JohnDeere.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Kevin Puetz 2020-11-23 19:55:25 -06:00 committed by Alexandre Julliard
parent 9c0c0e2b57
commit 029ec25e54
1 changed files with 5 additions and 1 deletions
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6
dlls/ntdll/unix/loader.c
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@ -810,11 +810,15 @@ static NTSTATUS fixup_ntdll_imports( const char *name, HMODULE module )
{
const IMAGE_NT_HEADERS *nt;
const IMAGE_IMPORT_DESCRIPTOR *descr;
const IMAGE_DATA_DIRECTORY *dir;
const IMAGE_THUNK_DATA *import_list;
IMAGE_THUNK_DATA *thunk_list;
nt = get_rva( module, ((IMAGE_DOS_HEADER *)module)->e_lfanew );
descr = get_rva( module, nt->OptionalHeader.DataDirectory[IMAGE_FILE_IMPORT_DIRECTORY].VirtualAddress );
dir = &nt->OptionalHeader.DataDirectory[IMAGE_FILE_IMPORT_DIRECTORY];
if (!dir->VirtualAddress || !dir->Size) return STATUS_SUCCESS;
descr = get_rva( module, dir->VirtualAddress );
for (; descr->Name && descr->FirstThunk; descr++)
{
thunk_list = get_rva( module, descr->FirstThunk );