CVE-2024-21885

highpriority · track · 0EPSS 0.014 · 73 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.42% (73rd) EPSS

CVSS 7.8 · high

Is it mine?

57 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedxwayland-21.1.4-150400.3.31.1.x86_64 as component of SUSE Linux Enterprise Desktop 15 SP4-LTSSsuse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

cvss

Technical severity, 0–10. One row per scoring source.

8.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secalert@redhat.com USexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.18.4highCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · SUSE Product Security

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-122USCWE-122US

affected products (57)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
Open Source CentOSall versionscert_bundDEcpe:/o:centos:centos:-
Open Source X.Org X11 <21.1.11all versionscert_bundDE
Open Source X.Org X11 <XWayland 23.2.4all versionscert_bundDE
OpenBSD OpenBSDall versionscert_bundDEcpe:/a:openbsd:openbsd:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Open Source X.Org X11< 21.1.11cert_bundDE
Open Source X.Org X11< XWayland 23.2.4cert_bundDE
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION< 0:1.1.0-25.el6_10.13enisa_euvdEU
Red Hat Red Hat Enterprise Linux 7< 0:1.20.4-27.el7_9enisa_euvdEU
Red Hat Red Hat Enterprise Linux 7< 0:1.8.0-31.el7_9enisa_euvdEU
Red Hat Red Hat Enterprise Linux 8< 0:1.13.1-2.el8_9.7enisa_euvdEU
Red Hat Red Hat Enterprise Linux 8< 0:1.20.11-22.el8enisa_euvdEU

showing 20 of 57

advisories (2)

Vendor and ecosystem advisories describing this.

SUSE-SU-2024:0165-1Security update for xwayland2024-01-19csaf · suse_csafDE
Security update for xwayland
WID-SEC-W-2024-0127X.Org X11: Mehrere SchwachstellenDeutsch2024-01-16csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in X.Org X11 ausnutzen, um beliebigen Programmcode auszuführen, Informationen offenzulegen oder einen Denial of Service Zustand herbeizuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund suse_csaf NVD CVE.org MITRE

published 2024-02-28modified 2026-06-17

references (58)

External citations — patches, advisories, analysis.

scry

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