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Status published
High
CVE-2024-21886
Xorg-x11-server: heap buffer overflow in disabledevice
Vulnerability Description
A heap buffer overflow flaw was found in the DisableDevice function in the X.Org server. This issue may lead to an application crash or, in some circumstances, remote code execution in SSH X11 forwarding environments.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Red Hat would like to thank Jan-Niklas Sohn (Trend Micro Zero Day Initiative) for reporting this issue.
References
- https://access.redhat.com/errata/RHSA-2024:0320
- https://access.redhat.com/errata/RHSA-2024:0557
- https://access.redhat.com/errata/RHSA-2024:0558
- https://access.redhat.com/errata/RHSA-2024:0597
- https://access.redhat.com/errata/RHSA-2024:0607
- https://access.redhat.com/errata/RHSA-2024:0614
- https://access.redhat.com/errata/RHSA-2024:0617
- https://access.redhat.com/errata/RHSA-2024:0621
- https://access.redhat.com/errata/RHSA-2024:0626
- https://access.redhat.com/errata/RHSA-2024:0629
- https://access.redhat.com/errata/RHSA-2024:2169
- https://access.redhat.com/errata/RHSA-2024:2170
- https://access.redhat.com/errata/RHSA-2024:2995
- https://access.redhat.com/errata/RHSA-2024:2996
- https://access.redhat.com/errata/RHSA-2025:12751
- https://access.redhat.com/security/cve/CVE-2024-21886
- https://bugzilla.redhat.com/show_bug.cgi?id=2256542
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Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat Enterprise Linux 6
Vulnerable Versions:
1.21.1.7, 0:1.1.0-25.el6_10.13, 0:1.20.4-27.el7_9, 0:1.8.0-31.el7_9, 0:1.13.1-2.el8_9.7, 0:1.20.11-22.el8, 0:21.1.3-15.el8, 0:1.9.0-15.el8_2.9, 0:1.11.0-8.el8_4.8, 0:1.12.0-6.el8_6.9, 0:1.12.0-15.el8_8.7, 0:1.13.1-3.el9_3.6, 0:1.20.11-24.el9, 0:22.1.9-5.el9, 0:1.11.0-22.el9_0.8, 0:1.12.0-14.el9_2.5
Timeline
Official Publish:
February 28th, 2024
Last Modified:
November 6th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H