Record status Published
Identifier year (not publication year) 2026
Source publication May 5, 2026
Source updated Jun 8, 2026
Imported by cveboard Oct 24, 2026
CNA source text (English) Xorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling
A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive information or cause the server to crash, resulting in a denial of service.
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 10.0 Extended Update Support
Vendor Red Hat
Product Red Hat Enterprise Linux 10.0 Extended Update Support
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 10.0 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) 0:24.1.5-6.el10_0 unaffectedrpm * Unavailable None listed
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_10.16 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Vendor Red Hat
Product Red Hat Enterprise Linux 7 Extended Lifecycle Support
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 7 Extended Lifecycle Support · Scoped product and version facts Version (version) Status (status) Version scheme (versionType) Exclusive end (lessThan) Inclusive end (lessThanOrEqual) Status changes (at → status) 0:1.20.4-34.el7_9 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Vendor Red Hat
Product Red Hat Enterprise Linux 7 Extended Lifecycle Support
Platforms Unknown
Default status affected
Package tigervnc
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 7 Extended Lifecycle Support · Scoped product and version facts Version (version) Status (status) Version scheme (versionType) Exclusive end (lessThan) Inclusive end (lessThanOrEqual) Status changes (at → status) 0:1.8.0-36.el7_9.4 unaffectedrpm * 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 xorg-x11-server
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) 0:1.20.10-4.el8_4 unaffectedrpm * 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_4.15 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Vendor Red Hat
Product Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On · Scoped product and version facts Version (version) Status (status) Version scheme (versionType) Exclusive end (lessThan) Inclusive end (lessThanOrEqual) Status changes (at → status) 0:1.20.10-4.el8_4 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Vendor Red Hat
Product Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Platforms Unknown
Default status affected
Package tigervnc
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On · 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_4.15 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Vendor Red Hat
Product Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.6 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) 0:21.1.3-2.el8_6.6 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Vendor Red Hat
Product Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.6 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) 0:1.20.11-7.el8_6 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Vendor Red Hat
Product Red Hat Enterprise Linux 8.6 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 8.6 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) 0:1.12.0-6.el8_6.17 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
Vendor Red Hat
Product Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
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 Long-Life Add-On · 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_6.17 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Vendor Red Hat
Product Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.6 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) 0:21.1.3-2.el8_6.6 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Vendor Red Hat
Product Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.6 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) 0:1.20.11-7.el8_6 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.6 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) 0:21.1.3-2.el8_6.6 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.6 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) 0:1.20.11-7.el8_6 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Vendor Red Hat
Product Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.8 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) 0:21.1.3-13.el8_8 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Vendor Red Hat
Product Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.8 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) 0:1.20.11-18.el8_8 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Vendor Red Hat
Product Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Platforms Unknown
Default status affected
Package tigervnc
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.8 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) 0:1.12.0-15.el8_8.17 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.8 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) 0:21.1.3-13.el8_8 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 8.8 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) 0:1.20.11-18.el8_8 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 8.8 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 8.8 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) 0:1.12.0-15.el8_8.17 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 9.0 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) 0:21.1.3-5.el9_0 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 9.0 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) 0:1.20.11-13.el9_0 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 9.0 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 9.0 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) 0:1.11.0-22.el9_0.17 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 9.2 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) 0:21.1.3-10.el9_2 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 9.2 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) 0:1.20.11-20.el9_2 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Vendor Red Hat
Product Red Hat Enterprise Linux 9.2 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 9.2 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) 0:1.12.0-14.el9_2.14 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.4 Extended Update Support
Vendor Red Hat
Product Red Hat Enterprise Linux 9.4 Extended Update Support
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 9.4 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) 0:1.20.11-28.el9_4 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.4 Extended Update Support
Vendor Red Hat
Product Red Hat Enterprise Linux 9.4 Extended Update Support
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 9.4 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) 0:22.1.9-8.el9_4 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.4 Extended Update Support
Vendor Red Hat
Product Red Hat Enterprise Linux 9.4 Extended Update Support
Platforms Unknown
Default status affected
Package tigervnc
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 9.4 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) 0:1.13.1-8.el9_4.9 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.6 Extended Update Support
Vendor Red Hat
Product Red Hat Enterprise Linux 9.6 Extended Update Support
Platforms Unknown
Default status affected
Package xorg-x11-server
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 9.6 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) 0:1.20.11-33.el9_6 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.6 Extended Update Support
Vendor Red Hat
Product Red Hat Enterprise Linux 9.6 Extended Update Support
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 9.6 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) 0:23.2.7-6.el9_6 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 9.6 Extended Update Support
Vendor Red Hat
Product Red Hat Enterprise Linux 9.6 Extended Update Support
Platforms Unknown
Default status affected
Package tigervnc
Package collection https://access.redhat.com/downloads/content/package-browser/
Red Hat Enterprise Linux 9.6 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) 0:1.14.1-10.el9_6 unaffectedrpm * Unavailable None listed
Red Hat Enterprise Linux 10
Vendor Red Hat
Product Red Hat Enterprise Linux 10
Platforms Unknown
Default status affected
Package xorg-x11-server-Xwayland
Package collection https://access.redhat.com/downloads/content/package-browser/
No explicit version tuples; consult this entry's default status.
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.
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/
No explicit version tuples; consult this entry's default status.
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/
No explicit version tuples; consult this entry's default status.
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/
No explicit version tuples; consult this entry's default status.
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/
No explicit version tuples; consult this entry's default status.
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/
No explicit version tuples; consult this entry's default status.
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/
No explicit version tuples; consult this entry's default status.