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[NTOSKRNL] On read/write, also check buffer respects device alignment requirements

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This commit is contained in:
Pierre Schweitzer
2018-10-04 07:56:23 +02:00
parent 1bd25c5c24
commit bf59669065
1 changed files with 16 additions and 0 deletions
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ntoskrnl/io/iomgr/iofunc.c
+16
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@@ -2621,6 +2621,14 @@ NtReadFile(IN HANDLE FileHandle,
return STATUS_INVALID_PARAMETER;
}
/* Fail if buffer doesn't match alignment requirements */
if (((ULONG_PTR)Buffer & DeviceObject->AlignmentRequirement) != 0)
{
/* Release the file object and and fail */
ObDereferenceObject(FileObject);
return STATUS_INVALID_PARAMETER;
}
if (ByteOffset)
{
/* Fail if ByteOffset is not sector size aligned */
@@ -3650,6 +3658,14 @@ NtWriteFile(IN HANDLE FileHandle,
return STATUS_INVALID_PARAMETER;
}
/* Fail if buffer doesn't match alignment requirements */
if (((ULONG_PTR)Buffer & DeviceObject->AlignmentRequirement) != 0)
{
/* Release the file object and and fail */
ObDereferenceObject(FileObject);
return STATUS_INVALID_PARAMETER;
}
if (ByteOffset)
{
/* Fail if ByteOffset is not sector size aligned */