CVE-2023-6816

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2023
Source publication: Jan 18, 2024
Source updated: Mar 19, 2026
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer

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.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION

Vendor: Red Hat
Product: Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.1.0-25.el6_10.13	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 7

Vendor: Red Hat
Product: Red Hat Enterprise Linux 7
Platforms: Unknown
Default status: affected
Package: xorg-x11-server
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.20.4-27.el7_9	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 7

Vendor: Red Hat
Product: Red Hat Enterprise Linux 7
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 7 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.8.0-31.el7_9	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.13.1-2.el8_9.7	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: xorg-x11-server
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.20.11-22.el8	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8
Platforms: Unknown
Default status: affected
Package: xorg-x11-server-Xwayland
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:21.1.3-15.el8	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.2 Advanced Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.2 Advanced Update Support
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.2 Advanced Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.0-15.el8_2.9	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.2 Telecommunications Update Service

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.2 Telecommunications Update Service
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.2 Telecommunications Update Service · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.0-15.el8_2.9	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.9.0-15.el8_2.9	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.11.0-8.el8_4.8	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.4 Telecommunications Update Service

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.4 Telecommunications Update Service
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.4 Telecommunications Update Service · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.11.0-8.el8_4.8	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.11.0-8.el8_4.8	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.6 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.6 Extended Update Support
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.6 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.12.0-6.el8_6.9	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 8.8 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 8.8 Extended Update Support
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 8.8 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.12.0-15.el8_8.7	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.13.1-3.el9_3.6	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9
Platforms: Unknown
Default status: affected
Package: xorg-x11-server
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.20.11-24.el9	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9
Platforms: Unknown
Default status: affected
Package: xorg-x11-server-Xwayland
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9 · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:22.1.9-5.el9	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.0 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.0 Extended Update Support
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.0 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.11.0-22.el9_0.8	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 9.2 Extended Update Support

Vendor: Red Hat
Product: Red Hat Enterprise Linux 9.2 Extended Update Support
Platforms: Unknown
Default status: affected
Package: tigervnc
Package collection: https://access.redhat.com/downloads/content/package-browser/

Red Hat Enterprise Linux 9.2 Extended Update Support · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
0:1.12.0-14.el9_2.5	`unaffected`	rpm	*	Unavailable	None listed

Red Hat Enterprise Linux 6

Vendor: Red Hat
Product: Red Hat Enterprise Linux 6
Platforms: Unknown
Default status: unknown
Package: xorg-x11-server
Package collection: https://access.redhat.com/downloads/content/package-browser/

No explicit version tuples; consult this entry's default status.