Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer (Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION)

CVE-2023-6816

CRITICAL 9.8

En bref

Source: NVD
EPSS: EPSS 2.11 % · centile 82 (2026-10-29)
État: PUBLISHED
Publiée: 2024-01-18 04:31 UTC
Mise à jour: 2026-03-19 21:23 UTC
Attribuée par: redhat
Statut NVD: Modified

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Description

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.

Faiblesses (CWE)

CWE-787 — Écriture hors limites

Références

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	redhat
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · secalert@redhat.com (Secondary)
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)

Références européennes

ENISA EUVD · EUVD-2023-59026
GCVE · GCVE-0-2023-6816

Configurations affectées (CPE NVD)

cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:* < 21.1.11
cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:* < 23.2.4
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Produits affectés

Produit	Versions
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 < *
Red Hat · Red Hat Enterprise Linux 9.2 Extended Update Support	unaffected 0:1.12.0-14.el9_2.5 < *
Red Hat · Red Hat Enterprise Linux 6

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

💣 Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer (Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION)