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25 lines
892 B
25 lines
892 B
From 673c07a75ed844d74676f3ccdcfdc706a7052dba Mon Sep 17 00:00:00 2001
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From: Christian Beier <dontmind@freeshell.org>
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Date: Sun, 17 May 2020 13:47:21 +0200
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Subject: [PATCH] libvncserver/rfbserver: fix possible divide-by-zero
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Closes #409
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---
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libvncserver/rfbserver.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/libvncserver/rfbserver.c b/libvncserver/rfbserver.c
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index 269a0137..9cc29c52 100644
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--- a/libvncserver/rfbserver.c
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+++ b/libvncserver/rfbserver.c
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@@ -3369,6 +3369,9 @@ rfbSendRectEncodingRaw(rfbClientPtr cl,
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char *fbptr = (cl->scaledScreen->frameBuffer + (cl->scaledScreen->paddedWidthInBytes * y)
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+ (x * (cl->scaledScreen->bitsPerPixel / 8)));
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+ if(!h || !w)
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+ return TRUE; /* nothing to send */
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+
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/* Flush the buffer to guarantee correct alignment for translateFn(). */
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if (cl->ublen > 0) {
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if (!rfbSendUpdateBuf(cl))
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