CVE-2024-21885

Xorg-x11-server: heap buffer overflow in xisenddevicehierarchyevent

HIGH 7.8

At a glance

Source: NVD
EPSS: EPSS 1.42 % · percentile 73 (2026-10-28)
State: PUBLISHED
Published: 2024-02-28 12:11 UTC
Updated: 2025-11-06 20:53 UTC
Assigner: redhat
NVD status: Deferred

Description

A flaw was found in X.Org server. In the XISendDeviceHierarchyEvent function, it is possible to exceed the allocated array length when certain new device IDs are added to the xXIHierarchyInfo struct. This can trigger a heap buffer overflow condition, which may lead to an application crash or remote code execution in SSH X11 forwarding environments.

Weaknesses (CWE)

CWE-122 — Heap-based Buffer Overflow

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	redhat
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · secalert@redhat.com (Secondary)

European references

ENISA EUVD · EUVD-2024-19496
GCVE · GCVE-0-2024-21885

Affected products

Product	Versions
xorg-server	affected 0 < 21.1.11 ; unaffected 21.1.11 < *
xwayland	affected 0 < 23.2.4 ; unaffected 23.2.4 < *
Red Hat · Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION	unaffected 0:1.1.0-25.el6_10.13 < *
Red Hat · Red Hat Enterprise Linux 7	unaffected 0:1.20.4-27.el7_9 < *
Red Hat · Red Hat Enterprise Linux 7	unaffected 0:1.8.0-31.el7_9 < *
Red Hat · Red Hat Enterprise Linux 8	unaffected 0:1.13.1-2.el8_9.7 < *
Red Hat · Red Hat Enterprise Linux 8	unaffected 0:1.20.11-22.el8 < *
Red Hat · Red Hat Enterprise Linux 8	unaffected 0:21.1.3-15.el8 < *
Red Hat · Red Hat Enterprise Linux 8.2 Advanced Update Support	unaffected 0:1.9.0-15.el8_2.9 < *
Red Hat · Red Hat Enterprise Linux 8.2 Telecommunications Update Service	unaffected 0:1.9.0-15.el8_2.9 < *
Red Hat · Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions	unaffected 0:1.9.0-15.el8_2.9 < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	unaffected 0:1.11.0-8.el8_4.8 < *
Red Hat · Red Hat Enterprise Linux 8.4 Telecommunications Update Service	unaffected 0:1.11.0-8.el8_4.8 < *
Red Hat · Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions	unaffected 0:1.11.0-8.el8_4.8 < *
Red Hat · Red Hat Enterprise Linux 8.6 Extended Update Support	unaffected 0:1.12.0-6.el8_6.9 < *
Red Hat · Red Hat Enterprise Linux 8.8 Extended Update Support	unaffected 0:1.12.0-15.el8_8.7 < *
Red Hat · Red Hat Enterprise Linux 9	unaffected 0:1.13.1-3.el9_3.6 < *
Red Hat · Red Hat Enterprise Linux 9	unaffected 0:1.20.11-24.el9 < *
Red Hat · Red Hat Enterprise Linux 9	unaffected 0:22.1.9-5.el9 < *
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support	unaffected 0:1.11.0-22.el9_0.8 < *

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD