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Windows Driver: Protect captured subject context during processing of user access token.

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This commit is contained in:
Mounir IDRASSI 2015-08-29 23:25:34 +02:00
parent 2f2cb6b7ae
commit dc6c279339
1 changed files with 2 additions and 0 deletions
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2
src/Driver/Ntdriver.c
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@ -2653,6 +2653,7 @@ NTSTATUS MountDevice (PDEVICE_OBJECT DeviceObject, MOUNT_STRUCT *mount)
PACCESS_TOKEN accessToken; PACCESS_TOKEN accessToken;
SeCaptureSubjectContext (&subContext); SeCaptureSubjectContext (&subContext);
SeLockSubjectContext(&subContext);
accessToken = SeQuerySubjectContextToken (&subContext); accessToken = SeQuerySubjectContextToken (&subContext);
if (!accessToken) if (!accessToken)
@ -2678,6 +2679,7 @@ NTSTATUS MountDevice (PDEVICE_OBJECT DeviceObject, MOUNT_STRUCT *mount)
} }
} }
SeUnlockSubjectContext(&subContext);
SeReleaseSubjectContext (&subContext); SeReleaseSubjectContext (&subContext);
if (NT_SUCCESS (ntStatus)) if (NT_SUCCESS (ntStatus))