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[WIN32K:NTUSER] Correctly capture UNICODE_STRING in NtUserEnumDisplaySettings.

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This commit is contained in:
Thomas Faber 2019-12-29 16:14:58 +01:00
parent be92be2e37
commit 3d81dc48a7
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GPG key ID: 076E7C3D44720826
1 changed files with 7 additions and 4 deletions
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11
win32ss/user/ntuser/display.c
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@ -596,6 +596,7 @@ NtUserEnumDisplaySettings(
OUT LPDEVMODEW lpDevMode,
IN DWORD dwFlags)
{
UNICODE_STRING ustrDeviceUser;
UNICODE_STRING ustrDevice;
WCHAR awcDevice[CCHDEVICENAME];
NTSTATUS Status;
@ -633,15 +634,17 @@ NtUserEnumDisplaySettings(
_SEH2_TRY
{
/* Probe the UNICODE_STRING and the buffer */
ProbeForReadUnicodeString(pustrDevice);
ustrDeviceUser = ProbeForReadUnicodeString(pustrDevice);
if (!pustrDevice->Length || !pustrDevice->Buffer)
if (!ustrDeviceUser.Length || !ustrDeviceUser.Buffer)
ExRaiseStatus(STATUS_NO_MEMORY);
ProbeForRead(pustrDevice->Buffer, pustrDevice->Length, sizeof(UCHAR));
ProbeForRead(ustrDeviceUser.Buffer,
ustrDeviceUser.Length,
sizeof(UCHAR));
/* Copy the string */
RtlCopyUnicodeString(&ustrDevice, pustrDevice);
RtlCopyUnicodeString(&ustrDevice, &ustrDeviceUser);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{