CVE-2025-62231A 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.
Updated under an hour ago ()
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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 calculation may overflow, leading to memory corruption or a crash.
- CVSS
- 7.3 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
- Weakness (CWE)
- CWE-190
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
x.org x_server x.org:x_server | before 21.1.19 | NVD |
x.org xwayland x.org:xwayland | before 24.1.9 | NVD |
ibm vios ibm:vios | from 4.1.0 before 4.1.1.30; 4.1.2.0 | NVD |
ibm aix ibm:aix | from 7.2.5 before 7.2.5.12; from 7.3.2 before 7.3.3.3; 7.3.4 | NVD |
debian debian_linux debian:debian_linux | 11.0 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 8.0; 9.0; 10.0 | NVD |
redhat enterprise_linux_aus redhat:enterprise_linux_aus | 8.2; 8.4; 8.6 | NVD |
redhat enterprise_linux_els redhat:enterprise_linux_els | 6.0; 7.0 | NVD |
redhat enterprise_linux_eus redhat:enterprise_linux_eus | 8.4; 9.4 | NVD |
redhat enterprise_linux_tus redhat:enterprise_linux_tus | 8.6; 8.8 | NVD |
redhat enterprise_linux_update_services_for_sap_solutions redhat:enterprise_linux_update_services_for_sap_solutions | 8.6; 8.8; 9.0; 9.2 | NVD |
References
- https://access.redhat.com/errata/RHSA-2025:19432third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19433third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19434third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19435third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19489third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19623third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:19909third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:20958third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:20960third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:20961third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:21035third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22040third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22041third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22051third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22055third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22056third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22077third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22096third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22164third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22167third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22364third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22365third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22426third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22427third-party-advisory
- https://access.redhat.com/errata/RHSA-2025:22667third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.