{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.7-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  x86/amd_node: Avoid divide by zero on virtualized systems  On a virtualized system, the number of nodes does not have a relationship to the number of roots.  A Xen PVH dom0 can calculate roots_per_node as 0, which crashes with a divide by zero in:    if (count++ % roots_per_node)  because the underlying topology code on Xen ends up making num_nodes 2 and num_roots 1 and the integer division result is 0.  The issue is seen with Xen, but it could affect other systems.  Set roots_per_node to 1 in this case. Print a firmware bug when this is performed for non-virtualized systems.    [ bp: Massage commit message. ]",
  "id": "DEBIAN-CVE-2026-98390",
  "modified": "2026-10-15T04:47:27.484970104Z",
  "published": "2026-10-14T14:17:49.873Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98390"
    }
  ],
  "upstream": [
    "CVE-2026-98390"
  ]
}