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      "text" : "An update for openstack-nova is now available for Red Hat OpenStack\nServices on OpenShift 18.0.18 (Antelope).\n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section.",
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      "text" : "OpenStack Compute (nova) is open source software designed\nto provision and manage large networks of virtual machines, creating a\nredundant and scalable cloud computing platform. It gives you the software,\ncontrol panels, and APIs required to orchestrate a cloud, including running\ninstances, managing networks, and controlling access through users and\nprojects. OpenStack Compute strives to be both hardware and hypervisor\nagnostic, currently supporting a variety of standard hardware\nconfigurations and seven major hypervisors.\n\nSecurity Fix(es):\n\n* Arbitrary Host File Overwrite via Unconstrained qemu-img Format Handling in OpenStack Nova (CVE-2026-24708)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage listed in the References section.",
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      "text" : "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
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      "url" : "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7884.json"
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      "category" : "description",
      "text" : "A flaw in OpenStack Nova’s interaction with the qemu-img utility allows an authenticated user to overwrite arbitrary files on the compute host. This occurs because Nova invokes qemu-img without strictly constraining the disk image format, enabling a malicious user to craft a QCOW2 header on a raw disk and trigger destructive behavior during instance operations such as resize.",
      "title" : "Vulnerability description"
    }, {
      "category" : "summary",
      "text" : "openstack-nova-compute: Arbitrary Host File Overwrite via Unconstrained qemu-img Format Handling in OpenStack Nova",
      "title" : "Vulnerability summary"
    }, {
      "category" : "other",
      "text" : "This vulnerability is rated Important for Red Hat OpenStack Platform. An authenticated attacker can exploit unconstrained disk format handling in OpenStack Nova when invoking qemu-img. By crafting a QCOW2 header on an ephemeral or root disk, an attacker can cause qemu-img to overwrite arbitrary files on the compute host with Nova's write access, leading to data destruction or denial of service.",
      "title" : "Statement"
    }, {
      "category" : "general",
      "text" : "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
      "title" : "CVSS score applicability"
    } ],
    "product_status" : {
      "fixed" : [ "9Base-RHOSO-18.0:openstack-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.src", "9Base-RHOSO-18.0:openstack-nova-api-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-common-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-compute-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-conductor-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-migration-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-novncproxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-scheduler-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-serialproxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-spicehtml5proxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:python3-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch" ]
    },
    "references" : [ {
      "category" : "self",
      "summary" : "Canonical URL",
      "url" : "https://access.redhat.com/security/cve/CVE-2026-24708"
    }, {
      "category" : "external",
      "summary" : "RHBZ#2430312",
      "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2430312"
    }, {
      "category" : "external",
      "summary" : "https://www.cve.org/CVERecord?id=CVE-2026-24708",
      "url" : "https://www.cve.org/CVERecord?id=CVE-2026-24708"
    }, {
      "category" : "external",
      "summary" : "https://nvd.nist.gov/vuln/detail/CVE-2026-24708",
      "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-24708"
    }, {
      "category" : "external",
      "summary" : "https://bugs.launchpad.net/nova/+bug/2137507",
      "url" : "https://bugs.launchpad.net/nova/+bug/2137507"
    } ],
    "release_date" : "2026-02-17T15:00:00+00:00",
    "remediations" : [ {
      "category" : "vendor_fix",
      "date" : "2026-04-29T04:16:18+00:00",
      "details" : "For details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
      "product_ids" : [ "9Base-RHOSO-18.0:openstack-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.src", "9Base-RHOSO-18.0:openstack-nova-api-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-common-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-compute-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-conductor-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-migration-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-novncproxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-scheduler-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-serialproxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-spicehtml5proxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:python3-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch" ],
      "restart_required" : {
        "category" : "none"
      },
      "url" : "https://access.redhat.com/errata/RHSA-2026:7884"
    }, {
      "category" : "workaround",
      "details" : "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.",
      "product_ids" : [ "9Base-RHOSO-18.0:openstack-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.src", "9Base-RHOSO-18.0:openstack-nova-api-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-common-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-compute-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-conductor-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-migration-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-novncproxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-scheduler-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-serialproxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-spicehtml5proxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:python3-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch" ]
    } ],
    "scores" : [ {
      "cvss_v3" : {
        "attackComplexity" : "LOW",
        "attackVector" : "LOCAL",
        "availabilityImpact" : "HIGH",
        "baseScore" : 7.1,
        "baseSeverity" : "HIGH",
        "confidentialityImpact" : "NONE",
        "integrityImpact" : "HIGH",
        "privilegesRequired" : "LOW",
        "scope" : "UNCHANGED",
        "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"
      },
      "products" : [ "9Base-RHOSO-18.0:openstack-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.src", "9Base-RHOSO-18.0:openstack-nova-api-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-common-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-compute-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-conductor-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-migration-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-novncproxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-scheduler-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-serialproxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:openstack-nova-spicehtml5proxy-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch", "9Base-RHOSO-18.0:python3-nova-1:27.5.2-18.0.20260312122217.c1c6d67.el9ost.noarch" ]
    } ],
    "threats" : [ {
      "category" : "impact",
      "details" : "Important"
    } ],
    "title" : "openstack-nova-compute: Arbitrary Host File Overwrite via Unconstrained qemu-img Format Handling in OpenStack Nova"
  } ]
}