Re: [Libvncserver-common] rfbMakeRichCursorFromXCursor crash

[Christian B. <in...@ch...>]

Am Wed, 28 Sep 2022 12:53:03 +0000
schrieb Johann Obermayr via LibVNCServer-common
<lib...@li...>:

> Hello,
> 
> i get a crash in rfbMakeRichCursorFromXCursor
> 
> #0  0xf65fbef0 in rfbMakeRichCursorFromXCursor () from
> /usr/lib/libvncserver.so.1 #1  0xf65fc370 in rfbSendCursorShape () from
> /usr/lib/libvncserver.so.1 #2  0xf65ee034 in rfbSendFramebufferUpdate () from
> /usr/lib/libvncserver.so.1 #3  0xf65e8440 in rfbUpdateClient () from
> /usr/lib/libvncserver.so.1 #4  0xf65e84d4 in rfbProcessEvents () from
> /usr/lib/libvncserver.so.1 #5  0x00147f00 in processClientEvents ()
> 
> After add some logging I see, that "cursor->source" is NULL.
> So it crash at line
> if(cursor->source[ j * w + i / 8] & bit)
> 
> Is this a knowing bug ?
> Exists there a bug fix ?
> 
> Thanks & best regards
>   Johann
> 

Hi Johann,

I don't know which version you are using, but you might want to scan through
the list of known issues at https://github.com/LibVNC/libvncserver/issues

If the bug is not there, please create an issue.

Best,
-- 
Christian Beier

what is, is; what is not is possible.