{
  "cvss": 6.7,
  "datePublished": "2026-06-12T10:16:22.177",
  "dateUpdated": "2026-08-31T18:17:17.337",
  "description": "A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds write in the host heap memory and a potential denial of service (DoS) for the QEMU process.",
  "id": "CVE-2026-48914",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "collectionURL": "https://gitlab.com/qemu-project/qemu",
            "defaultStatus": "unaffected",
            "packageName": "qemu",
            "versions": [
              {
                "lessThanOrEqual": "11.0.1",
                "status": "affected",
                "version": "1.1.0",
                "versionType": "semver"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:10.2"
            ],
            "defaultStatus": "affected",
            "packageName": "qemu-kvm",
            "product": "Red Hat Enterprise Linux 10",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "18:10.1.0-16.el10_2.5",
                "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_8.4",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:6"
            ],
            "defaultStatus": "unknown",
            "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": "unknown",
            "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": "unknown",
            "packageName": "qemu-kvm-ma",
            "product": "Red Hat Enterprise Linux 7",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:8"
            ],
            "defaultStatus": "affected",
            "packageName": "virt:rhel/qemu-kvm",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux_nvidia:"
            ],
            "defaultStatus": "affected",
            "packageName": "qemu-kvm",
            "product": "Red Hat Enterprise Linux for NVIDIA 26",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift:4"
            ],
            "defaultStatus": "affected",
            "packageName": "openshift/ose-rhel-coreos-8",
            "product": "Red Hat OpenShift Container Platform 4",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift:4"
            ],
            "defaultStatus": "affected",
            "packageName": "openshift/ose-rhel-coreos-9",
            "product": "Red Hat OpenShift Container Platform 4",
            "vendor": "Red Hat"
          }
        ],
        "source": "secalert@redhat.com"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds write in the host heap memory and a potential denial of service (DoS) for the QEMU process."
      }
    ],
    "id": "CVE-2026-48914",
    "lastModified": "2026-08-31T18:17:17.337",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.5,
          "impactScore": 4.7,
          "source": "secalert@redhat.com",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-48914",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-06-12T09:57:24.232821Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-06-12T10:16:22.177",
    "references": [
      {
        "source": "secalert@redhat.com",
        "url": "https://access.redhat.com/errata/RHSA-2026:39311"
      },
      {
        "source": "secalert@redhat.com",
        "url": "https://access.redhat.com/errata/RHSA-2026:58571"
      },
      {
        "source": "secalert@redhat.com",
        "url": "https://access.redhat.com/security/cve/CVE-2026-48914"
      },
      {
        "source": "secalert@redhat.com",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488283"
      },
      {
        "source": "secalert@redhat.com",
        "url": "https://lore.kernel.org/qemu-devel/20260526154957.1741622-1-stefanha@redhat.com/"
      }
    ],
    "sourceIdentifier": "secalert@redhat.com",
    "vulnStatus": "Awaiting Analysis",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-122"
          }
        ],
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ]
  },
  "severity": "MEDIUM",
  "source": "nvd",
  "title": "A flaw was found in QEMU's virtio-blk device"
}