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CVE-2025-62230

Xorg: xwayland: use-after-free in xkb client resource removal

publishedCWE-416

A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected clients disconnect.

Technical severity7.3 highCVSS 3.1 · CNA: redhat
Published2025-10-30Source updated 2026-11-05
Collected2026-11-053 attributed sources

Fixes and workarounds

Workaround

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Source: CNA: redhat

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: af854a3a-2127-422b-91ae-364da2661108

Affected products and versions

ProductVersionsAuthority
Xwayland
X.Org
xwayland
https://gitlab.freedesktop.org/xorg/xserver 		≥ 0; < 24.1.9 (affected, semver)
Other versions: unaffected 		CNA: redhat
Red Hat Enterprise Linux 10
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:24.1.5-5.el10_0; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 10
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:24.1.5-5.el10_1; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.1.0-25.el6_10.15; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.4-33.el7_9; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 7 Extended Lifecycle Support
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.8.0-36.el7_9.3; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:21.1.3-19.el8_10; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-27.el8_10; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.15.0-8.el8_10; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.2 Advanced Update Support
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.9.0-15.el8_2.15; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.2 Advanced Update Support
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.6-5.el8_2; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.11.0-8.el8_4.14; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.10-3.el8_4; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.11.0-8.el8_4.14; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.10-3.el8_4; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.12.0-6.el8_6.15; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-6.el8_6; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:21.1.3-2.el8_6.5; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.12.0-6.el8_6.15; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-6.el8_6; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:21.1.3-2.el8_6.5; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.12.0-6.el8_6.15; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-6.el8_6; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:21.1.3-2.el8_6.5; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.12.0-15.el8_8.16; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-17.el8_8; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.8 Telecommunications Update Service
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:21.1.3-12.el8_8; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.12.0-15.el8_8.16; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-17.el8_8; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:21.1.3-12.el8_8; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-32.el9_6; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.14.1-9.el9_6; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:23.2.7-5.el9_6; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.15.0-6.el9_7; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:23.2.7-5.el9_7; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-32.el9_7; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.11.0-22.el9_0.16; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-12.el9_0; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:21.1.3-4.el9_0; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.12.0-14.el9_2.13; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-19.el9_2; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:21.1.3-9.el9_2; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.4 Extended Update Support
Red Hat
tigervnc
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.13.1-8.el9_4.8; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.4 Extended Update Support
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:1.20.11-27.el9_4; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 9.4 Extended Update Support
Red Hat
xorg-x11-server-Xwayland
https://access.redhat.com/downloads/content/package-browser/ 		≥ 0:22.1.9-7.el9_4; < * (unaffected, rpm)
Other versions: affected 		CNA: redhat
Red Hat Enterprise Linux 6
Red Hat
xorg-x11-server
https://access.redhat.com/downloads/content/package-browser/ 		Range not reported
Other versions: unknown 		CNA: redhat

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

NVD applicability configurations (4)

These expressions retain AND/OR operators, negation, and required environmental products. A listed product is not sufficient to establish exposure when additional conditions apply.

[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "21.1.19",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "24.1.9",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "4.1.1.30",
            "versionStartIncluding": "4.1.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:ibm:vios:4.1.2.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "7.2.5.12",
            "versionStartIncluding": "7.2.5",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "7.3.3.3",
            "versionStartIncluding": "7.3.2",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:ibm:aix:7.3.4:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_aus:8.2:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_els:6.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_els:7.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:9.4:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_tus:8.6:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_tus:8.8:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.8:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.0:*:*:*:*:*:*:*",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]

CVSS assessments

Version / scoreVectorAuthority
3.1 / 7.3
high		 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:HCNA: redhat
3.1 / 7.3
high		 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:HNVD: [email protected]

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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