{"id":"CVE-2025-62231","title":"A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow","summary":"A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value …","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H","cwe":["CWE-190"],"published":"2025-10-30","updated":"2026-06-29","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-62231","references":[{"url":"https://access.redhat.com/errata/RHSA-2025:19432","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:19433","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:19434","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:19435","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:19489","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:19623","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:19909","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:20958","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:20960","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:20961","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:21035","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22040","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22041","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22051","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22055","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22056","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22077","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22096","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22164","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22167","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22364","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22365","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22426","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22427","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22667","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22729","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22742","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:22753","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:0031","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:0033","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:0034","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:0035","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:0036","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2025-62231","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2402660","label":"secalert@redhat.com"},{"url":"https://lists.x.org/archives/xorg-announce/2025-October/003635.html","label":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2025/10/28/7","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00033.html","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00277,"epssPercentile":0.18097,"ingestedAt":"2026-06-29T21:48:47.211Z","slug":"CVE-2025-62231","body":"## Overview\n\nA flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a crash.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}