SUSE: xkbcomp Moderate NULL Pointer Crashes Vuln 2025:4426-1

## This update for xkbcomp fixes the following issues: * CVE-2018-15863: NULL pointer dereference triggered by a a crafted keymap file with a no-op modmask expression can lead to a crash (bsc#1105832). * CVE-2018-15861: NULL pointer dereference triggered by a crafted keymap file that induces an `xkb_intern_atom` failure can lead to a crash (bsc#1105832). * CVE-2018-15859: NULL pointer dereference triggered by a specially a crafted keymap file can lead to a crash (bsc#1105832). * CVE-2018-15853: endless recursion triggered by a crafted keymap file that induces boolean negation can lead to a crash (bsc#1105832). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: