Bug 1623012 – CVE-2018-15854 libxkbcommon: NULL pointer dereference resulting in a crash

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Bug 1623012 - (CVE-2018-15854) CVE-2018-15854 libxkbcommon: NULL pointer dereference resulting in a crash

Summary:	CVE-2018-15854 libxkbcommon: NULL pointer dereference resulting in a crash

Status:	NEW

Aliases:	CVE-2018-15854

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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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=low,public=20180310,reported=2...
Keywords:	Security

Depends On:	1623038 1642880
Blocks:	1623044
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Reported:	2018-08-28 07:48 EDT by Andrej Nemec
Modified:	2018-10-25 05:19 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	libxkbcommon 0.8.1
Doc Type:	If docs needed, set a value
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Description Andrej Nemec 2018-08-28 07:48:49 EDT

Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because geometry tokens were desupported incorrectly.

Upstream patch:

https://github.com/xkbcommon/libxkbcommon/commit/e3cacae7b1bfda0d839c280494f23284a1187adf

References:

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

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