Bug 1492007

Summary:	gnome-shell: Use-after-free due to icon remapping
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dkholia, fmuellner, gnome-sig, otaylor, walters
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-10-11 10:53:34 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1492008, 1500589
Bug Blocks:	1492009

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.