CVE-2018-15855

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.06%
Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://security.gentoo.org/glsa/201810-05 third party advisory vendor advisory
https://usn.ubuntu.com/3786-1/ third party advisory vendor advisory
https://usn.ubuntu.com/3786-2/ third party advisory vendor advisory
https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html third party advisory
https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ff third party advisory patch
https://access.redhat.com/errata/RHSA-2019:2079 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-15855?
CVE-2018-15855 has been scored as a medium severity vulnerability.
How to fix CVE-2018-15855?
To fix CVE-2018-15855, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-15855 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-15855 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.