CVE-2025-62230
highA flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup.
Vendor / product: X.org — x server
A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected clients disconnect.
CVSS
7.3
7.3 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2025-10-30 06:15
Modified: 2026-11-05 17:17
NVD status: Analyzed
Last synced 9 hours ago
Verified against the source API 2026-11-05 17:18 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
x.org / x_server <21.1.19
x.org / xwayland <24.1.9
ibm / vios ≥4.1.0 <4.1.1.30, 4.1.2.0
ibm / aix ≥7.2.5 <7.2.5.12, ≥7.3.2 <7.3.3.3, 7.3.4
debian / debian_linux 11.0
redhat / enterprise_linux 8.0, 9.0, 10.0
redhat / enterprise_linux_aus 8.2, 8.4, 8.6
redhat / enterprise_linux_els 6.0, 7.0
redhat / enterprise_linux_eus 8.4, 9.4
redhat / enterprise_linux_tus 8.6, 8.8
redhat / enterprise_linux_update_services_for_sap_solutions 8.6, 8.8, 9.0, 9.2
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://lists.x.org/archives/xorg-announce/2025-October/003635.html
Patch / mitigation: http://www.openwall.com/lists/oss-security/2025/10/28/7
References
- https://access.redhat.com/errata/RHSA-2025:19432 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:19433 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:19434 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:19435 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:19489 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:19623 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:19909 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:20958 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:20960 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:20961 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:21035 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22040 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22041 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22051 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22055 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22056 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22077 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22096 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22164 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22167 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22364 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22365 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22426 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22427 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2025:22667 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-05 17:18 UTC · record ↗