CVE-2018-15855 — NULL Pointer Dereference in Project Xkbcommon

CWE-476 — NULL Pointer Dereference10 documents7 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 86.25%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Xkbcommon LibxkbcommonXkbcommon Project XkbcommonDebian Libxkbcommon+1 more
Timeline
PublishedAug 25
Latest updateMay 14

Description

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 the XkbFile for an xkb_geometry section was mishandled.

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶debiandebian/libxkbcommon< libxkbcommon 0.8.2-1 (bookworm)
▶Debianxkbcommon/libxkbcommon< 0.8.2-1+3
▶Ubuntuxkbcommon/libxkbcommon< 0.4.1-0ubuntu1.1+2

Also affects: Ubuntu Linux 14.04, 16.04, 18.04

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

4
GHSA
GHSA-6qv5-c3f6-2jwr: Unchecked NULL pointer usage in xkbcommon before 0↗2022-05-14
▶
OSV
libxkbcommon vulnerabilities↗2018-11-06
▶
OSV
libxkbcommon vulnerabilities↗2018-10-08
▶
OSV
CVE-2018-15855: Unchecked NULL pointer usage in xkbcommon before 0↗2018-08-25
▶

📋Vendor Advisories

4
Ubuntu
libxkbcommon vulnerabilities↗2018-11-06
▶
Ubuntu
libxkbcommon vulnerabilities↗2018-10-08
▶
Red Hat
libxkbcommon: NULL pointer dereference when handling xkb_geometry↗2018-03-11
▶
Debian
CVE-2018-15855: libxkbcommon - Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local at...↗2018
▶

💬Community

1
Bugzilla
CVE-2018-15855 libxkbcommon: NULL pointer dereference when handling xkb_geometry↗2018-08-28
▶