coreaudio: Verify valid lineId in MIXER_GETLINECONTROLSF_ONEBYTYPE.

b314f132 · Aric Stewart · Alexandre Julliard · 35ecb1b6 · b314f132
Commit b314f132 authored Nov 29, 2007 by Aric Stewart Committed by Alexandre Julliard Nov 29, 2007
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mixer.c dlls/winecoreaudio.drv/mixer.c +5 -0

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--- a/dlls/winecoreaudio.drv/mixer.c
+++ b/dlls/winecoreaudio.drv/mixer.c
@@ -760,6 +760,11 @@ static DWORD MIX_GetLineControls(WORD wDevID, LPMIXERLINECONTROLSW lpMlc, DWORD_
            break;
        case MIXER_GETLINECONTROLSF_ONEBYTYPE:
            TRACE("dwLineID=%d MIXER_GETLINECONTROLSF_ONEBYTYPE (%s)\n", lpMlc->dwLineID, getControlType(lpMlc->u.dwControlType));
+            if ( (lpMlc->dwLineID < 0) || (lpMlc->dwLineID >= mixer.caps.cDestinations) )
+            {
+                ret = MIXERR_INVALLINE;
+                break;
+            }
            if (lpMlc->u.dwControlType == MIXERCONTROL_CONTROLTYPE_VOLUME)
            {
                ctrl = (lpMlc->dwLineID * ControlsPerLine) + IDControlVolume;