{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "f18992be262d6515c94bf4bf6ce7598135076771"
            },
            {
              "fixed": "0195e04b1eec8fb00e2db9c5e55655a3f5e76f60"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4427a33faabb4b81511b99dfee18ce0a38b5b5df"
            },
            {
              "fixed": "d3fd094c13c6d0b74f246461ca4cf427d539c8e8"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4e8f58620f6717f72f3d88a2c8f25c0c656d0ba7"
            },
            {
              "fixed": "6311b8c471afa33c18adbe4eb16f862936b71ca3"
            },
            {
              "fixed": "2a2367d46d7a4ee4122b7a86e57125542dbbe963"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "496bc868d9066e034787aa14b8ad6c23e77b51ef"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.12.101"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.18.42"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "7.1.6"
            },
            {
              "fixed": "7.2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89904.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Fix acpi_package_ids[] array overflow\n\nWith LoongArch virt machine, a typical setting is one core per socket,\nthere will max 256 sockets (packages) on one VM. With PPTT acpi table,\narray acpi_package_ids[] will be overflowed.\n\nHere change the array size of acpi_package_ids[] with the max value of\nMAX_PACKAGES and KVM_MAX_VCPUS.",
  "id": "CVE-2026-89904",
  "modified": "2026-09-17T03:30:50.404465924Z",
  "published": "2026-09-16T10:32:03.752Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0195e04b1eec8fb00e2db9c5e55655a3f5e76f60"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2a2367d46d7a4ee4122b7a86e57125542dbbe963"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6311b8c471afa33c18adbe4eb16f862936b71ca3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3fd094c13c6d0b74f246461ca4cf427d539c8e8"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89904.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89904"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "LoongArch: Fix acpi_package_ids[] array overflow"
}