CVE-2018-15853

Description

Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before 0.8.1, which could be used by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean negation.

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 patch mailing list third party advisory
https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a third party advisory patch
https://access.redhat.com/errata/RHSA-2019:2079 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-15853?
CVE-2018-15853 has been scored as a medium severity vulnerability.
How to fix CVE-2018-15853?
To fix CVE-2018-15853, 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-2018-15853 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-15853 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.