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CVE PROGRAM SOURCE RECORD6.1 Medium

CVE-2026-34002

Xorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling

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Status
Published
Published
Updated
Assigning organization
redhat

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support

Default version status: affected

  • 0:24.1.5-6.el10_0 to < *unaffected

Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION

Default version status: affected

  • 0:1.1.0-25.el6_10.16 to < *unaffected

Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support

Default version status: affected

  • 0:1.20.4-34.el7_9 to < *unaffected

Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support

Default version status: affected

  • 0:1.8.0-36.el7_9.4 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

Default version status: affected

  • 0:1.20.10-4.el8_4 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

Default version status: affected

  • 0:1.11.0-8.el8_4.15 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Default version status: affected

  • 0:1.20.10-4.el8_4 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Default version status: affected

  • 0:1.11.0-8.el8_4.15 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

Default version status: affected

  • 0:21.1.3-2.el8_6.6 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

Default version status: affected

  • 0:1.20.11-7.el8_6 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

Default version status: affected

  • 0:1.12.0-6.el8_6.17 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Default version status: affected

  • 0:1.12.0-6.el8_6.17 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Default version status: affected

  • 0:21.1.3-2.el8_6.6 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Default version status: affected

  • 0:1.20.11-7.el8_6 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions

Default version status: affected

  • 0:21.1.3-2.el8_6.6 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions

Default version status: affected

  • 0:1.20.11-7.el8_6 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Default version status: affected

  • 0:21.1.3-13.el8_8 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Default version status: affected

  • 0:1.20.11-18.el8_8 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Default version status: affected

  • 0:1.12.0-15.el8_8.17 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

Default version status: affected

  • 0:21.1.3-13.el8_8 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

Default version status: affected

  • 0:1.20.11-18.el8_8 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

Default version status: affected

  • 0:1.12.0-15.el8_8.17 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Default version status: affected

  • 0:21.1.3-5.el9_0 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Default version status: affected

  • 0:1.20.11-13.el9_0 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Default version status: affected

  • 0:1.11.0-22.el9_0.17 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Default version status: affected

  • 0:21.1.3-10.el9_2 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Default version status: affected

  • 0:1.20.11-20.el9_2 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Default version status: affected

  • 0:1.12.0-14.el9_2.14 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support

Default version status: affected

  • 0:1.20.11-28.el9_4 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support

Default version status: affected

  • 0:22.1.9-8.el9_4 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support

Default version status: affected

  • 0:1.13.1-8.el9_4.9 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support

Default version status: affected

  • 0:1.20.11-33.el9_6 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support

Default version status: affected

  • 0:23.2.7-6.el9_6 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support

Default version status: affected

  • 0:1.14.1-10.el9_6 to < *unaffected

Red Hat Red Hat Enterprise Linux 10

Default version status: affected

Red Hat Red Hat Enterprise Linux 6

Default version status: unknown

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

References