{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  mm/mm_init: handle alloc_percpu failure in free_area_init_core_hotplug  We miss a failed allocation check for pgdat-\u003eper_cpu_nodestats, which results in a NULL deref when we offset into the per-cpu area.  Propagate -ENOMEM up the stack and leave per_cpu_nodestats pointing at boot_nodestats so a later online can retry the allocation.  hotadd_init_pgdat() returns NULL on failure, which __try_online_node() already maps to -ENOMEM.  On failure nothing needs to be unwound:   - the node is never marked online   - per_cpu_nodestats is left pointing at boot_nodestats   - __add_memory_resource() cleans up pending memblock resources   - later online attempts retry the per_cpu_nodestats allocation",
  "id": "DEBIAN-CVE-2026-93172",
  "modified": "2026-09-18T04:47:40.367479349Z",
  "published": "2026-09-17T17:18:12.943Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-93172"
    }
  ],
  "upstream": [
    "CVE-2026-93172"
  ]
}