Mike Jumper created GUACAMOLE-1850:
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Summary: guac_common_cursor_dup() may segfault if cursor is being
modified
Key: GUACAMOLE-1850
URL: https://issues.apache.org/jira/browse/GUACAMOLE-1850
Project: Guacamole
Issue Type: Bug
Reporter: Mike Jumper
The {{guac_common_cursor}} structure is written assuming that all access will
already be threadsafe (such as existing access guarded by the
{{guac_common_display}} lock), but {{guac_common_cursor}} is occasionally used
outside the scope of any related locks (such as when handling inbound cursors
from an RDP server). This results in a segfault/abort if that usage happens to
occur while a {{guac_common_cursor_dup()}} call is underway.
{{guac_common_cursor}} probably needs its own locks, similar to the issue with
{{guac_common_clipboard}} that was addressed with:
https://github.com/apache/guacamole-server/pull/178
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