** Changed in: libgrip
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1276333
Title:
evince/eog crash when using untrusted X11
Status in libgrip: multitouch gesture library for GTK:
Fix Released
Status in “geis” package in Ubuntu:
New
Status in “libgrip” package in Ubuntu:
Fix Released
Bug description:
evince/eog crash when using untrusted X11 connection (ssh -X with
ForwardX11Trusted no) .
Somehow geis->backend ends up being NULL in this case, and it crashes
in geis_backend_create_token which is called with a NULL argument
from geis_backend_token_new (geis.c). I am not sure how this should be
handled, but adding a test at the top of geis_backend_token_new fixes
the problem:
if (!geis->backend)
return NULL;
This causes then a crash later in libgrip in the function
'processed_mapped_window_request' (gripgesturemanager.c), because it
calls geis_filter_add_term with a NULL filter. This may be fixed with
a test after 'geis_filter_new':
GeisFilter window_filter = geis_filter_new(priv->geis, filter_id);
if (NULL == window_filter)
return;
Not sure if there are better ways, but this seems to fix it for me.
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