Bug 1623018 – CVE-2018-15856 libxkbcommon: Infinite loop when reaching EOL unexpectedly resulting in a crash

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Bug 1623018 - (CVE-2018-15856) CVE-2018-15856 libxkbcommon: Infinite loop when reaching EOL unexpectedly resulting in a crash

Summary:	CVE-2018-15856 libxkbcommon: Infinite loop when reaching EOL unexpectedly res...

Status:	NEW

Aliases:	CVE-2018-15856

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
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Target Release:	---
Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=low,public=20180312,reported=2...
Keywords:	Security

Depends On:	1623038 1643141
Blocks:	1623044
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Reported:	2018-08-28 07:52 EDT by Andrej Nemec
Modified:	2018-10-25 11:02 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	libxkbcommon 0.8.1
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Description Andrej Nemec 2018-08-28 07:52:23 EDT

An infinite loop when reaching EOL unexpectedly in compose/parser.c (aka the keymap parser) in xkbcommon before 0.8.1 could be used by local attackers to cause a denial of service during parsing of crafted keymap files.

Upstream patch:

https://github.com/xkbcommon/libxkbcommon/commit/842e4351c2c97de6051cab6ce36b4a81e709a0e1

References:

https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html

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