[Webkit-unassigned] [Bug 184366] [GTK] crash when destroying a RenderObject with orca running

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue May 15 09:06:09 PDT 2018


https://bugs.webkit.org/show_bug.cgi?id=184366

Michael Catanzaro <mcatanzaro at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugs-noreply at webkitgtk.org,
                   |                            |mcatanzaro at igalia.com
            Summary|crash when destroying a     |[GTK] crash when destroying
                   |RenderObject with orca      |a RenderObject with orca
                   |running                     |running

--- Comment #8 from Michael Catanzaro <mcatanzaro at igalia.com> ---
(In reply to Ryosuke Niwa from comment #5) 
> This change simply removes the release assertion. We need to address the
> underlying issue which is that accessibility code in GTK+ port is updating
> layout in the middle of deleting render objects. That's never safe, and can
> lead to memory corruption. This crash is currently protecting you from
> having an exploitable security bug.

There's a similar issue in bug #182257, where the a11y code is unsafe but we do not have a release assert to protect us.

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