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[NTOSKRNL]

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* Fix several null pointer dereferences. CID 731608.
CORE-6681

svn path=/trunk/; revision=60572
This commit is contained in:
Amine Khaldi 2013-10-07 12:08:33 +00:00
parent 96c8ce5d9d
commit 599e34cb17
1 changed files with 30 additions and 12 deletions
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42
reactos/ntoskrnl/mm/ARM3/sysldr.c
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@ -1064,8 +1064,11 @@ MiResolveImageReferences(IN PVOID ImageBase,
if ((GdiLink) && (NormalLink))
{
/* It's not, it's importing stuff it shouldn't be! */
MiDereferenceImports(LoadedImports);
if (LoadedImports) ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
if (LoadedImports)
{
MiDereferenceImports(LoadedImports);
ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
}
return STATUS_PROCEDURE_NOT_FOUND;
}
@ -1078,8 +1081,11 @@ MiResolveImageReferences(IN PVOID ImageBase,
!(_strnicmp(ImportName, "gdi32", sizeof("gdi32") - 1)))
{
/* This is not kernel code */
MiDereferenceImports(LoadedImports);
if (LoadedImports) ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
if (LoadedImports)
{
MiDereferenceImports(LoadedImports);
ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
}
return STATUS_PROCEDURE_NOT_FOUND;
}
@ -1103,8 +1109,11 @@ MiResolveImageReferences(IN PVOID ImageBase,
if (!NT_SUCCESS(Status))
{
/* Failed */
MiDereferenceImports(LoadedImports);
if (LoadedImports) ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
if (LoadedImports)
{
MiDereferenceImports(LoadedImports);
ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
}
return Status;
}
@ -1226,8 +1235,11 @@ CheckDllState:
{
/* Cleanup and return */
RtlFreeUnicodeString(&NameString);
MiDereferenceImports(LoadedImports);
if (LoadedImports) ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
if (LoadedImports)
{
MiDereferenceImports(LoadedImports);
ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
}
return Status;
}
@ -1259,8 +1271,11 @@ CheckDllState:
if (!ExportDirectory)
{
/* Cleanup and return */
MiDereferenceImports(LoadedImports);
if (LoadedImports) ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
if (LoadedImports)
{
MiDereferenceImports(LoadedImports);
ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
}
DPRINT1("Warning: Driver failed to load, %S not found\n", *MissingDriver);
return STATUS_DRIVER_ENTRYPOINT_NOT_FOUND;
}
@ -1289,8 +1304,11 @@ CheckDllState:
if (!NT_SUCCESS(Status))
{
/* Cleanup and return */
MiDereferenceImports(LoadedImports);
if (LoadedImports) ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
if (LoadedImports)
{
MiDereferenceImports(LoadedImports);
ExFreePoolWithTag(LoadedImports, TAG_LDR_IMPORTS);
}
return Status;
}