{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.8-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  mm/util: don't read __page_2 for order-1 folios in snapshot_page()  snapshot_page() currently reads __page_2 after checking nr_pages \u003e 1, but it should only do so when nr_pages \u003e 2.  If an order-1 folio is allocated at the end of a vmemmap section, __page_2 will not exist and reading it will cause a fault.  During DLPAR memory remove on a 22 TB ppc64le LPAR, snapshot_page() oopsed on the page isolation path while reading an order-1 folio's __page_2 from an adjacent absent section (unmapped vmemmap).  Fix this to avoid reading memmap that doesn't exist (e.g., a vmemmap hole).",
  "id": "DEBIAN-CVE-2026-80685",
  "modified": "2026-09-14T16:47:41.747801598Z",
  "published": "2026-08-28T08:16:53.963Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-80685"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-80685"
  ]
}