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[MOUNTMGR] Fix out of bounds write

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CORE-16530
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Mark Jansen 2019-11-23 16:23:28 +01:00
parent 9e797f0ae7
commit d4a0549eb6
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1 changed files with 2 additions and 1 deletions
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3
drivers/filters/mountmgr/mountmgr.c
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@ -42,6 +42,7 @@ KEVENT UnloadEvent;
LONG Unloading; LONG Unloading;
static const WCHAR Cunc[] = L"\\??\\C:"; static const WCHAR Cunc[] = L"\\??\\C:";
#define Cunc_LETTER_POSITION 4
/* /*
* @implemented * @implemented
@ -1106,7 +1107,7 @@ MountMgrMountedDeviceArrival(IN PDEVICE_EXTENSION DeviceExtension,
/* Start checking all letters that could have been associated */ /* Start checking all letters that could have been associated */
for (Letter = L'D'; Letter <= L'Z'; Letter++) for (Letter = L'D'; Letter <= L'Z'; Letter++)
{ {
CSymLink.Buffer[LETTER_POSITION] = Letter; CSymLink.Buffer[Cunc_LETTER_POSITION] = Letter;
InitializeObjectAttributes(&ObjectAttributes, InitializeObjectAttributes(&ObjectAttributes,
&CSymLink, &CSymLink,