{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9a0fe62f93ede02c27aaca81112af1e59c8c0979"
            },
            {
              "fixed": "68d27250c9e81ab7764603e346c2b1017cb53adf"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "8a6e02d0c00e7b62e6acb74146878bb91e9e7e31"
            },
            {
              "fixed": "cfa7e2734877330d6c10e0f33953905486c4530c"
            },
            {
              "fixed": "de8ccbd6bf4efe7a059e2c483789936009e10f42"
            },
            {
              "fixed": "db3dbdfea1b8f38774419c5c2c14e4b81c48708d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.12.13"
            },
            {
              "fixed": "6.12.103"
            }
          ],
          "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": "6.12.103"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.44"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80723.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: reserved_mem: prevent OOB when too many dynamic regions are defined\n\nOn boot, fdt_scan_reserved_mem() saves each dynamically-placed\n/reserved-memory subnode into a local array of size\nMAX_RESERVED_REGIONS.\n\nIf the device tree defines more than MAX_RESERVED_REGIONS\ndynamically-placed regions, fdt_scan_reserved_mem() writes past the\nend of the local array.\n\nAdd a bounds check that logs an error and skips the excess regions,\nrestoring the original behavior.",
  "id": "CVE-2026-80723",
  "modified": "2026-08-31T03:30:21.735826297Z",
  "published": "2026-08-28T06:53:18.485Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/68d27250c9e81ab7764603e346c2b1017cb53adf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cfa7e2734877330d6c10e0f33953905486c4530c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db3dbdfea1b8f38774419c5c2c14e4b81c48708d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de8ccbd6bf4efe7a059e2c483789936009e10f42"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80723.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80723"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "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": "of: reserved_mem: prevent OOB when too many dynamic regions are defined"
}