Fedora 43: Critical NULL Pointer Dereference Vulnerability in xkbcomp
fedora
December 6, 2025
xkbcomp 1.5.0 (CVE-2018-15853, CVE-2018-15859, CVE-2018-15861, CVE-2018-15863)
Summary
X.Org XKB keymap compiler
Update Information:
xkbcomp 1.5.0 (CVE-2018-15853, CVE-2018-15859, CVE-2018-15861, CVE-2018-15863)
Topics Covered
Change Log
* Wed Dec 3 2025 Peter Hutterer
References
[ 1 ] Bug #2418046 - CVE-2018-15853 xkbcomp: Endless recursion in xkbcomp/expr.c resulting in a crash [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2418046
[ 2 ] Bug #2418048 - CVE-2018-15863 xkbcomp: NULL pointer dereference in ResolveStateAndPredicate resulting in a crash [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2418048
[ 3 ] Bug #2418050 - CVE-2018-15861 xkbcomp: NULL pointer dereference in ExprResolveLhs resulting in a crash [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2418050
[ 4 ] Bug #2418053 - CVE-2018-15859 xkbcomp: NULL pointer dereference when parsing invalid atoms in ExprResolveLhs resulting in a crash [fedora-43]
https://bugzilla.redhat.com/show_bug.cgi?id=2418053
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-3a9b79ca0e' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Severity
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Critical
Name: xkbcomp
Product: Fedora 43
Version: 1.5.0
Release: 1.fc43
URL: https://https://
Summary: XKB keymap compiler
Topics Covered
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