forked from pool/xorg-x11-server
18 lines
665 B
Diff
18 lines
665 B
Diff
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diff --git a/hw/xfree86/modes/xf86EdidModes.c b/hw/xfree86/modes/xf86EdidModes.c
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index 2f26a64..9489947 100644
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--- a/hw/xfree86/modes/xf86EdidModes.c
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+++ b/hw/xfree86/modes/xf86EdidModes.c
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@@ -327,6 +327,12 @@ DDCModeFromDetailedTiming(int scrnIndex, struct detailed_timings *timing,
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Mode->VSyncEnd = Mode->VSyncStart + timing->v_sync_width;
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Mode->VTotal = timing->v_active + timing->v_blanking;
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+ /* perform basic check on the detail timing */
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+ if (Mode->HSyncEnd > Mode->HTotal || Mode->VSyncEnd > Mode->VTotal) {
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+ xfree(Mode);
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+ return NULL;
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+ }
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+
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xf86SetModeDefaultName(Mode);
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/* We ignore h/v_size and h/v_border for now. */
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