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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-34001

Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption

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Status
Published
Published
Updated
Assigning organization
redhat

Description

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially enabling memory corruption. This could result in a denial of service or further compromise of the system.

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

Default version status: affected

  • 0:24.1.5-6.el10_1 to < *unaffected

Red Hat Red Hat Enterprise Linux 10

Default version status: affected

  • 0:24.1.9-4.el10_2 to < *unaffected

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

Default version status: affected

  • 0:21.1.3-20.el8_10 to < *unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 0:1.20.11-28.el8_10 to < *unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 0:1.15.0-9.el8_10 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

Default version status: affected

  • 0:1.15.0-6.el9_7.1 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:23.2.7-6.el9_7 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:1.20.11-33.el9_7 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:1.15.0-7.el9_8.1 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:1.20.11-34.el9_8 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:24.1.9-4.el9_8 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 6

Default version status: unknown

References