Davide Beatrici : wineoss: Return E_UNEXPECTED with invalid dataflow in GetAudioEndpoint.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 63874db740a38bffc038cfb9deb7800176e96ed3
URL:    https://gitlab.winehq.org/wine/wine/-/commit/63874db740a38bffc038cfb9deb7800...

Author: Davide Beatrici <git(a)davidebeatrici.dev>
Date:   Wed Jun 28 09:10:02 2023 +0200

wineoss: Return E_UNEXPECTED with invalid dataflow in GetAudioEndpoint.

---

 dlls/wineoss.drv/mmdevdrv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dlls/wineoss.drv/mmdevdrv.c b/dlls/wineoss.drv/mmdevdrv.c
index 3322374cb90..6bc1002bff7 100644
--- a/dlls/wineoss.drv/mmdevdrv.c
+++ b/dlls/wineoss.drv/mmdevdrv.c
@@ -306,6 +306,10 @@ HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev,
         WARN("Unknown GUID: %s\n", debugstr_guid(guid));
         return AUDCLNT_E_DEVICE_INVALIDATED;
     }
+
+    if(oss_dev->flow != eRender && oss_dev->flow != eCapture)
+        return E_UNEXPECTED;
+
     len = strlen(oss_dev->devnode);
     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, offsetof(ACImpl, device_name[len + 1]));
     if(!This)