An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected.

zetlyn/cve-nvd vulnerability cve CVE-2026-24708 known 2026-02-18

https://nvd.nist.gov/vuln/detail/CVE-2026-24708

Properties

automatableno
At least one of those steps needs a person.
receipt
Source
NVD
Its words
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Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].automatable
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCno
2026-09-29 09:45 UTC—
What the source handed over
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        "lang": "en",
        "value": "An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected."
      },
      {
        "lang": "es",
        "value": "Se descubrió un problema en OpenStack Nova antes de la versión 30.2.2, 31 antes de la 31.2.1, y 32 antes de la 32.1.1. Al escribir una cabecera QCOW maliciosa en un disco raíz o efímero y luego activar un redimensionamiento, un usuario puede inducir al backend de imagen Flat de Nova a llamar a qemu-img sin una restricción de formato, lo que resulta en una operación de redimensionamiento de imagen insegura que podría destruir datos en el sistema anfitrión. Solo los nodos de cómputo que utilizan el backend de imagen Flat (normalmente configurados con use_cow_images=False) se ven afectados."
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    "id": "CVE-2026-24708",
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}
cvss8.2
receipt
Source
NVD
Its words
8.2
Read by
field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseScore || field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since
2026-09-29 09:45 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
What the source handed over
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cvss_vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H
receipt
Source
NVD
Its words
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H
Read by
field:cve.metrics.cvssMetricV31[type=Primary].cvssData.vectorString || field:cve.metrics.cvssMetricV31[].cvssData.vectorString
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H
2026-09-29 09:45 UTC—
What the source handed over
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        "value": "An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected."
      },
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        "lang": "es",
        "value": "Se descubrió un problema en OpenStack Nova antes de la versión 30.2.2, 31 antes de la 31.2.1, y 32 antes de la 32.1.1. Al escribir una cabecera QCOW maliciosa en un disco raíz o efímero y luego activar un redimensionamiento, un usuario puede inducir al backend de imagen Flat de Nova a llamar a qemu-img sin una restricción de formato, lo que resulta en una operación de redimensionamiento de imagen insegura que podría destruir datos en el sistema anfitrión. Solo los nodos de cómputo que utilizan el backend de imagen Flat (normalmente configurados con use_cow_images=False) se ven afectados."
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}
cweCWE-669, CWE-73
receipt
Source
NVD
Its words
CWE-669, CWE-73
Read by
field:cve.weaknesses[].description[].value
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCCWE-669, CWE-73
2026-09-29 09:45 UTC—
What the source handed over
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        "value": "An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected."
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        "value": "Se descubrió un problema en OpenStack Nova antes de la versión 30.2.2, 31 antes de la 31.2.1, y 32 antes de la 32.1.1. Al escribir una cabecera QCOW maliciosa en un disco raíz o efímero y luego activar un redimensionamiento, un usuario puede inducir al backend de imagen Flat de Nova a llamar a qemu-img sin una restricción de formato, lo que resulta en una operación de redimensionamiento de imagen insegura que podría destruir datos en el sistema anfitrión. Solo los nodos de cómputo que utilizan el backend de imagen Flat (normalmente configurados con use_cow_images=False) se ven afectados."
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        "type": "Secondary"
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}
exploitationnone
No evidence of exploitation, and no public proof of concept.
receipt
Source
NVD
Its words
none
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].exploitation
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCnone
2026-09-29 09:45 UTC—
What the source handed over
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            "packageName": "rhosp12/openstack-nova-compute",
            "product": "Red Hat OpenStack Platform 18.0",
            "vendor": "Red Hat"
          },
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            "packageName": "rhosp-rhel9/openstack-nova-compute",
            "product": "Red Hat OpenStack Platform 18.0",
            "vendor": "Red Hat"
          }
        ],
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
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    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected."
      },
      {
        "lang": "es",
        "value": "Se descubrió un problema en OpenStack Nova antes de la versión 30.2.2, 31 antes de la 31.2.1, y 32 antes de la 32.1.1. Al escribir una cabecera QCOW maliciosa en un disco raíz o efímero y luego activar un redimensionamiento, un usuario puede inducir al backend de imagen Flat de Nova a llamar a qemu-img sin una restricción de formato, lo que resulta en una operación de redimensionamiento de imagen insegura que podría destruir datos en el sistema anfitrión. Solo los nodos de cómputo que utilizan el backend de imagen Flat (normalmente configurados con use_cow_images=False) se ven afectados."
      }
    ],
    "id": "CVE-2026-24708",
    "lastModified": "2026-09-11T13:17:13.113",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
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            "confidentialityImpact": "NONE",
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            "scope": "CHANGED",
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            "role": "CISA Coordinator",
            "timestamp": "2026-02-19T19:07:53.345297Z",
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        "source": "cve@mitre.org",
        "url": "https://bugs.launchpad.net/nova/+bug/2137507"
      },
      {
        "source": "cve@mitre.org",
        "url": "https://www.openwall.com/lists/oss-security/2026/02/17/7"
      },
      {
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        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://access.redhat.com/errata/RHSA-2026:54757"
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        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://access.redhat.com/errata/RHSA-2026:66401"
      },
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        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
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      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
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      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430312"
      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24708.json"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Deferred",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-669"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      },
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-73"
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        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
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    ]
  }
}
fixed_in30.2.2, 31.2.1, 32.1.1
receipt
Source
NVD
Its words
30.2.2, 31.2.1, 32.1.1
Read by
field:cve.affected[].affectedData[].versions[status=affected].lessThan
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTC30.2.2, 31.2.1, 32.1.1
2026-09-29 09:45 UTC—
What the source handed over
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    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected."
      },
      {
        "lang": "es",
        "value": "Se descubrió un problema en OpenStack Nova antes de la versión 30.2.2, 31 antes de la 31.2.1, y 32 antes de la 32.1.1. Al escribir una cabecera QCOW maliciosa en un disco raíz o efímero y luego activar un redimensionamiento, un usuario puede inducir al backend de imagen Flat de Nova a llamar a qemu-img sin una restricción de formato, lo que resulta en una operación de redimensionamiento de imagen insegura que podría destruir datos en el sistema anfitrión. Solo los nodos de cómputo que utilizan el backend de imagen Flat (normalmente configurados con use_cow_images=False) se ven afectados."
      }
    ],
    "id": "CVE-2026-24708",
    "lastModified": "2026-09-11T13:17:13.113",
    "metrics": {
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    "vulnStatus": "Deferred",
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      {
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        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      },
      {
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            "value": "CWE-73"
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}
productNova
receipt
Source
NVD
Its words
Nova
Read by
field:cve.affected[].affectedData[].product
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-09-29 17:49 UTCNova
2026-09-29 09:45 UTC—
What the source handed over
{
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                "versionType": "semver"
              },
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                "versionType": "semver"
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        "value": "An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected."
      },
      {
        "lang": "es",
        "value": "Se descubrió un problema en OpenStack Nova antes de la versión 30.2.2, 31 antes de la 31.2.1, y 32 antes de la 32.1.1. Al escribir una cabecera QCOW maliciosa en un disco raíz o efímero y luego activar un redimensionamiento, un usuario puede inducir al backend de imagen Flat de Nova a llamar a qemu-img sin una restricción de formato, lo que resulta en una operación de redimensionamiento de imagen insegura que podría destruir datos en el sistema anfitrión. Solo los nodos de cómputo que utilizan el backend de imagen Flat (normalmente configurados con use_cow_images=False) se ven afectados."
      }
    ],
    "id": "CVE-2026-24708",
    "lastModified": "2026-09-11T13:17:13.113",
    "metrics": {
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        "url": "https://bugs.launchpad.net/nova/+bug/2137507"
      },
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        "source": "cve@mitre.org",
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      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://access.redhat.com/security/cve/CVE-2026-24708"
      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430312"
      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24708.json"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Deferred",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-669"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      },
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-73"
          }
        ],
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ]
  }
}
severityHIGH
From 7.0 to 8.9.
receipt
Source
NVD
Its words
HIGH
Read by
field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseSeverity || field:cve.metrics.cvssMetricV31[].cvssData.baseSeverity
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCHIGH
2026-09-29 09:45 UTC—
What the source handed over
{
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        "value": "An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected."
      },
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        "lang": "es",
        "value": "Se descubrió un problema en OpenStack Nova antes de la versión 30.2.2, 31 antes de la 31.2.1, y 32 antes de la 32.1.1. Al escribir una cabecera QCOW maliciosa en un disco raíz o efímero y luego activar un redimensionamiento, un usuario puede inducir al backend de imagen Flat de Nova a llamar a qemu-img sin una restricción de formato, lo que resulta en una operación de redimensionamiento de imagen insegura que podría destruir datos en el sistema anfitrión. Solo los nodos de cómputo que utilizan el backend de imagen Flat (normalmente configurados con use_cow_images=False) se ven afectados."
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}
statusDeferred
receipt
Source
NVD
Its words
Deferred
Read by
field:cve.vulnStatus
Said since
2026-09-29 09:45 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
What the source handed over
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        "lang": "en",
        "value": "An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected."
      },
      {
        "lang": "es",
        "value": "Se descubrió un problema en OpenStack Nova antes de la versión 30.2.2, 31 antes de la 31.2.1, y 32 antes de la 32.1.1. Al escribir una cabecera QCOW maliciosa en un disco raíz o efímero y luego activar un redimensionamiento, un usuario puede inducir al backend de imagen Flat de Nova a llamar a qemu-img sin una restricción de formato, lo que resulta en una operación de redimensionamiento de imagen insegura que podría destruir datos en el sistema anfitrión. Solo los nodos de cómputo que utilizan el backend de imagen Flat (normalmente configurados con use_cow_images=False) se ven afectados."
      }
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    "id": "CVE-2026-24708",
    "lastModified": "2026-09-11T13:17:13.113",
    "metrics": {
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            "baseScore": 8.2,
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            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
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            "scope": "CHANGED",
            "userInteraction": "NONE",
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            "version": "3.1"
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            "privilegesRequired": "LOW",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.2,
          "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
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            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-02-19T19:07:53.345297Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-02-18T18:24:33.087",
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        "url": "https://bugs.launchpad.net/nova/+bug/2137507"
      },
      {
        "source": "cve@mitre.org",
        "url": "https://www.openwall.com/lists/oss-security/2026/02/17/7"
      },
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      },
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      },
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        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430312"
      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24708.json"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Deferred",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-669"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      },
      {
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          {
            "lang": "en",
            "value": "CWE-73"
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        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
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}
technical_impactpartial
The attacker gains limited control, or limited information.
receipt
Source
NVD
Its words
partial
Read by
field:cve.metrics.ssvcV203[].ssvcData.options[].technicalImpact
Said since
2026-10-06 12:29 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-10-06 12:29 UTCpartial
2026-09-29 09:45 UTC—
What the source handed over
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    "descriptions": [
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        "lang": "en",
        "value": "An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected."
      },
      {
        "lang": "es",
        "value": "Se descubrió un problema en OpenStack Nova antes de la versión 30.2.2, 31 antes de la 31.2.1, y 32 antes de la 32.1.1. Al escribir una cabecera QCOW maliciosa en un disco raíz o efímero y luego activar un redimensionamiento, un usuario puede inducir al backend de imagen Flat de Nova a llamar a qemu-img sin una restricción de formato, lo que resulta en una operación de redimensionamiento de imagen insegura que podría destruir datos en el sistema anfitrión. Solo los nodos de cómputo que utilizan el backend de imagen Flat (normalmente configurados con use_cow_images=False) se ven afectados."
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    ],
    "id": "CVE-2026-24708",
    "lastModified": "2026-09-11T13:17:13.113",
    "metrics": {
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}
vendorOpenStack
receipt
Source
NVD
Its words
OpenStack
Read by
field:cve.affected[].affectedData[].vendor
Said since
2026-09-29 17:49 UTC
Last answered
2026-10-06 12:41 UTC
Original
open at the source
2026-09-29 17:49 UTCOpenStack
2026-09-29 09:45 UTC—
What the source handed over
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        "value": "An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected."
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        "value": "Se descubrió un problema en OpenStack Nova antes de la versión 30.2.2, 31 antes de la 31.2.1, y 32 antes de la 32.1.1. Al escribir una cabecera QCOW maliciosa en un disco raíz o efímero y luego activar un redimensionamiento, un usuario puede inducir al backend de imagen Flat de Nova a llamar a qemu-img sin una restricción de formato, lo que resulta en una operación de redimensionamiento de imagen insegura que podría destruir datos en el sistema anfitrión. Solo los nodos de cómputo que utilizan el backend de imagen Flat (normalmente configurados con use_cow_images=False) se ven afectados."
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        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://access.redhat.com/errata/RHSA-2026:7884"
      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://access.redhat.com/security/cve/CVE-2026-24708"
      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430312"
      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24708.json"
      }
    ],
    "sourceIdentifier": "cve@mitre.org",
    "vulnStatus": "Deferred",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-669"
          }
        ],
        "source": "cve@mitre.org",
        "type": "Secondary"
      },
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-73"
          }
        ],
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ]
  }
}

Text

An issue was discovered in OpenStack Nova before 30.2.2, 31 before 31.2.1, and 32 before 32.1.1. By writing a malicious QCOW header to a root or ephemeral disk and then triggering a resize, a user may convince Nova's Flat image backend to call qemu-img without a format restriction, resulting in an unsafe image resize operation that could destroy data on the host system. Only compute nodes using the Flat image backend (usually configured with use_cow_images=False) are affected.