From: Pierre Schweitzer <pierre@reactos.org>
Date: Fri, 6 Sep 2019 06:30:18 +0000 (+0200)
Subject: [MOUNTMGR] Don't overrun output buffer in QueryPointsFromMemory
X-Git-Tag: 0.4.14-dev~170
X-Git-Url: https://git.reactos.org/?p=reactos.git;a=commitdiff_plain;h=ff19ce934bf35768e3478bf484ed4935bb826eb3

[MOUNTMGR] Don't overrun output buffer in QueryPointsFromMemory
---

diff --git a/drivers/filters/mountmgr/point.c b/drivers/filters/mountmgr/point.c
index 77fc6fba95f..4c1d843db50 100644
--- a/drivers/filters/mountmgr/point.c
+++ b/drivers/filters/mountmgr/point.c
@@ -342,6 +342,8 @@ QueryPointsFromMemory(IN PDEVICE_EXTENSION DeviceExtension,
 
     if (MountPoints->Size > Stack->Parameters.DeviceIoControl.OutputBufferLength)
     {
+        Irp->IoStatus.Information = sizeof(MOUNTMGR_MOUNT_POINTS);
+
         return STATUS_BUFFER_OVERFLOW;
     }