FKIE_CVE-2025-11234

Vulnerability from fkie_nvd - Published: 2025-10-03 11:15 - Updated: 2026-10-18 21:10
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:23228
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:0326
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:0332
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:0702
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:1831
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:18772
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:22147
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:3077
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:3165
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:5578
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:59831
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:68513
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:69131
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2025-11234
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2401209
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://gitlab.com/qemu-project/qemu",
          "defaultStatus": "unaffected",
          "packageName": "qemu",
          "versions": [
            {
              "lessThan": "10.1.2",
              "status": "affected",
              "version": "2.6.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.1"
          ],
          "defaultStatus": "affected",
          "packageName": "qemu-kvm",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "18:10.0.0-14.el10_1.5",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:8::appstream",
            "cpe:/a:redhat:enterprise_linux:8::crb"
          ],
          "defaultStatus": "affected",
          "packageName": "virt-devel:rhel",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "8100020251120003312.489197e6",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:8::appstream",
            "cpe:/a:redhat:enterprise_linux:8::crb"
          ],
          "defaultStatus": "affected",
          "packageName": "virt:rhel",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "8100020251202222937.489197e6",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.4::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "virt:rhel",
          "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "8040020260916092751.522a0ee4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.4::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "virt:rhel",
          "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "8040020260916092751.522a0ee4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:8.8::appstream",
            "cpe:/a:redhat:rhel_tus:8.8::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "virt:rhel",
          "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "8080020260910092120.63b34585",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:8.8::appstream",
            "cpe:/a:redhat:rhel_tus:8.8::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "virt:rhel",
          "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "8080020260910092120.63b34585",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:9::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "qemu-kvm",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "17:10.1.0-17.el9_8",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:9.0::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "qemu-kvm",
          "product": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "17:6.2.0-11.el9_0.10",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:9.2::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "qemu-kvm",
          "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "17:7.2.0-14.el9_2.24",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_eus:9.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "qemu-kvm",
          "product": "Red Hat Enterprise Linux 9.4 Extended Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "17:8.2.0-11.el9_4.18",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_eus:9.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "qemu-kvm",
          "product": "Red Hat Enterprise Linux 9.4 Extended Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "17:8.2.0-11.el9_4.19",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4.12::el8"
          ],
          "defaultStatus": "affected",
          "packageName": "openshift/ose-rhel-coreos-8",
          "product": "Red Hat OpenShift Container Platform 4.12",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "412.86.202608241157-0",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4.16::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "openshift/ose-rhel-coreos-9",
          "product": "Red Hat OpenShift Container Platform 4.16",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "416.94.202601071926-0",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4.17::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "openshift/ose-rhel-coreos-9",
          "product": "Red Hat OpenShift Container Platform 4.17",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "417.94.202601120213-0",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift:4.18::el9"
          ],
          "defaultStatus": "affected",
          "packageName": "openshift/ose-rhel-coreos-9",
          "product": "Red Hat OpenShift Container Platform 4.18",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "418.94.202601071817-0",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "unaffected",
          "packageName": "qemu-kvm",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "unaffected",
          "packageName": "qemu-kvm",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "affected",
          "packageName": "qemu-kvm-ma",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una falla en QEMU. Si el objeto QIOChannelWebsock se libera mientras espera completar un handshake, se filtra un GSource. Esto puede llevar a que la devoluci\u00f3n de llamada se active m\u00e1s tarde y desencadene un uso despu\u00e9s de liberaci\u00f3n en el uso del canal. Esto puede ser explotado por un cliente malicioso con acceso de red al puerto WebSocket de VNC para causar una denegaci\u00f3n de servicio durante el handshake de WebSocket antes de la autenticaci\u00f3n del cliente VNC."
    }
  ],
  "id": "CVE-2025-11234",
  "lastModified": "2026-10-18T21:10:00.120",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-11234",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-10-03T15:56:54.379790Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-10-03T11:15:30.437",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2025:23228"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:0326"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:0332"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:0702"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:1831"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:18772"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:22147"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:3077"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:3165"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:5578"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:59831"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:68513"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2026:69131"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2025-11234"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2401209"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}



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