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[NTOS:PS] Fix size handling in ProcessDeviceMap

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This commit is contained in:
Timo Kreuzer
2020-09-27 17:32:27 +02:00
parent 895dccd4ac
commit d74037b666
1 changed files with 2 additions and 7 deletions
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9
ntoskrnl/ps/query.c
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@@ -564,12 +564,6 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
/* DOS Device Map */
case ProcessDeviceMap:
if (ProcessInformationLength < sizeof(PROCESS_DEVICEMAP_INFORMATION))
{
Status = STATUS_INFO_LENGTH_MISMATCH;
break;
}
if (ProcessInformationLength == sizeof(PROCESS_DEVICEMAP_INFORMATION_EX))
{
/* Protect read in SEH */
@@ -601,7 +595,8 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
}
else
{
if (ProcessInformationLength != sizeof(PROCESS_DEVICEMAP_INFORMATION))
/* This has to be the size of the Query union field for x64 compatibility! */
if (ProcessInformationLength != RTL_FIELD_SIZE(PROCESS_DEVICEMAP_INFORMATION, Query))
{
Status = STATUS_INFO_LENGTH_MISMATCH;
break;