{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a5718fe8f70f33b1b5b47a153057cfdd19684598"
            },
            {
              "fixed": "a594100e147a6a67eb29189170f1df3645cda12b"
            },
            {
              "fixed": "8b3e0c1c63015deaf084286899f5b2d0526715de"
            },
            {
              "fixed": "44c1d902cf0798b60762a7a98be992b9f5ded7dd"
            },
            {
              "fixed": "ac7385af1dca86a5ea704c80ca4dc822083ff9e2"
            },
            {
              "fixed": "431812eb88c200bc3ec33b88782c8cc415842074"
            },
            {
              "fixed": "92f38fe85198ace9b211bc7712b7951acfb94560"
            },
            {
              "fixed": "038f068cced8e9c49e8c419f3112d909ad366a3a"
            },
            {
              "fixed": "1b001b16bc88f3f7817e228acfd91ee01bdcfcce"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.4.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80627.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nMIPS: mm: Fix out-of-bounds write in maar_res_walk()\n\nmaar_res_walk() uses wi-\u003enum_cfg as the index into the fixed-size\nwi-\u003ecfg array, but checks whether the array is full only after it has\nfilled the selected entry. If walk_system_ram_range() reports more than\n16 memory ranges, the overflow call writes one struct maar_config past\nthe end of the array before WARN_ON() prevents num_cfg from advancing.\n\nMove the full-array check before taking the array slot and return non-zero\nwhen the scratch array is full, so walk_system_ram_range() terminates the\nwalk instead of invoking the callback for further ranges.",
  "id": "CVE-2026-80627",
  "modified": "2026-08-30T03:30:37.583642263Z",
  "published": "2026-08-28T06:48:44.777Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/038f068cced8e9c49e8c419f3112d909ad366a3a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b001b16bc88f3f7817e228acfd91ee01bdcfcce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/431812eb88c200bc3ec33b88782c8cc415842074"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/44c1d902cf0798b60762a7a98be992b9f5ded7dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b3e0c1c63015deaf084286899f5b2d0526715de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92f38fe85198ace9b211bc7712b7951acfb94560"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a594100e147a6a67eb29189170f1df3645cda12b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac7385af1dca86a5ea704c80ca4dc822083ff9e2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80627.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80627"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "MIPS: mm: Fix out-of-bounds write in maar_res_walk()"
}