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kernelbase: Fix GetFileVersionInfo*() crashes with malformed resources. 

Some Unity games ship with an encrypted Assembly-CSharp.dll, including
the resources directory, yet the engine still calls GetFileVersionInfoSizeW()
on those files. This may results in a page fault when trying to find the
version resource and takes the whole process down.

The change fixes crashes when launching Home Behind 2 and Crown Trick.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=50075
Signed-off-by: Arkadiusz Hiler <ahiler@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Arkadiusz Hiler 2021-03-02 19:22:38 +02:00 committed by Alexandre Julliard
parent 31fab6705a
commit e51ae86937
1 changed files with 19 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
dlls/kernelbase/version.c
View File

@ -240,7 +240,8 @@ done:
* Copied from loader/pe_resource.c
*/
static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DIRECTORY *dir,
WORD id, const void *root )
WORD id, const void *root,
DWORD root_size )
{
const IMAGE_RESOURCE_DIRECTORY_ENTRY *entry;
int min, max, pos;
@ -248,11 +249,19 @@ static const IMAGE_RESOURCE_DIRECTORY *find_entry_by_id( const IMAGE_RESOURCE_DI
entry = (const IMAGE_RESOURCE_DIRECTORY_ENTRY *)(dir + 1);
min = dir->NumberOfNamedEntries;
max = min + dir->NumberOfIdEntries - 1;
if (max >= (root_size - ((INT_PTR)dir - (INT_PTR)root) - sizeof(*dir)) / sizeof(*entry))
return NULL;
while (min <= max)
{
pos = (min + max) / 2;
if (entry[pos].u.Id == id)
return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + entry[pos].u2.s2.OffsetToDirectory);
{
DWORD offset = entry[pos].u2.s2.OffsetToDirectory;
if (offset > root_size - sizeof(*dir)) return NULL;
return (const IMAGE_RESOURCE_DIRECTORY *)((const char *)root + offset);
}
if (entry[pos].u.Id > id) max = pos - 1;
else min = pos + 1;
}
@ -294,7 +303,8 @@ static inline int push_language( WORD *list, int pos, WORD lang )
* find_entry_language
*/
static const IMAGE_RESOURCE_DIRECTORY *find_entry_language( const IMAGE_RESOURCE_DIRECTORY *dir,
const void *root, DWORD flags )
const void *root, DWORD root_size,
DWORD flags )
{
const IMAGE_RESOURCE_DIRECTORY *ret;
WORD list[9];
@ -319,7 +329,7 @@ static const IMAGE_RESOURCE_DIRECTORY *find_entry_language( const IMAGE_RESOURCE
pos = push_language( list, pos, MAKELANGID( LANG_ENGLISH, SUBLANG_DEFAULT ) );
}
for (i = 0; i < pos; i++) if ((ret = find_entry_by_id( dir, list[i], root ))) return ret;
for (i = 0; i < pos; i++) if ((ret = find_entry_by_id( dir, list[i], root, root_size ))) return ret;
return find_entry_default( dir, root );
}
@ -413,7 +423,7 @@ static BOOL find_pe_resource( HANDLE handle, DWORD *resLen, DWORD *resOff, DWORD
PIMAGE_DATA_DIRECTORY resDataDir;
PIMAGE_SECTION_HEADER sections;
LPBYTE resSection;
DWORD len, section_size, data_size;
DWORD len, section_size, data_size, resDirSize;
const void *resDir;
const IMAGE_RESOURCE_DIRECTORY *resPtr;
const IMAGE_RESOURCE_DATA_ENTRY *resData;
@ -486,21 +496,22 @@ static BOOL find_pe_resource( HANDLE handle, DWORD *resLen, DWORD *resOff, DWORD
/* Find resource */
resDir = resSection + (resDataDir->VirtualAddress - sections[i].VirtualAddress);
resDirSize = section_size - (resDataDir->VirtualAddress - sections[i].VirtualAddress);
resPtr = resDir;
resPtr = find_entry_by_id( resPtr, VS_FILE_INFO, resDir );
resPtr = find_entry_by_id( resPtr, VS_FILE_INFO, resDir, resDirSize );
if ( !resPtr )
{
TRACE("No typeid entry found\n" );
goto done;
}
resPtr = find_entry_by_id( resPtr, VS_VERSION_INFO, resDir );
resPtr = find_entry_by_id( resPtr, VS_VERSION_INFO, resDir, resDirSize );
if ( !resPtr )
{
TRACE("No resid entry found\n" );
goto done;
}
resPtr = find_entry_language( resPtr, resDir, flags );
resPtr = find_entry_language( resPtr, resDir, resDirSize, flags );
if ( !resPtr )
{
TRACE("No default language entry found\n" );