Bug 1492007 - gnome-shell: Use-after-free due to icon remapping
Summary: gnome-shell: Use-after-free due to icon remapping
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1492008 1500589
Blocks: 1492009
TreeView+ depends on / blocked
 
Reported: 2017-09-15 09:21 UTC by Andrej Nemec
Modified: 2019-09-29 14:22 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the way gnome-shell handled mapping and unmapping of tray icons. A malicious or misbehaving local application could potentially use this flaw to crash the gnome-shell process.
Clone Of:
Environment:
Last Closed: 2017-10-11 10:53:34 UTC
Embargoed:

Attachments (Terms of Use)

Description Andrej Nemec 2017-09-15 09:21:22 UTC 
If a tray icon gets a mapped and unmapped and the mapped again in quick succession, we can end up with multiple handlers listening for window creation events. An attacker could use this to crash gnome-shell.
Comment 1 Andrej Nemec 2017-09-15 09:21:44 UTC 
Created gnome-shell tracking bugs for this issue:

Affects: fedora-all [bug 1492008]
Comment 2 Andrej Nemec 2017-09-27 08:36:29 UTC 
Upstream issue:

https://bugzilla.gnome.org/show_bug.cgi?id=787361

Upstream patch:

https://git.gnome.org/browse/gnome-shell/commit/?id=90c55e1
Comment 7 Fedora Update System 2017-11-01 16:38:28 UTC 
gnome-shell-3.22.3-2.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
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