{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.170-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.85-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.19.6-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  ACPI: processor: Fix NULL-pointer dereference in acpi_processor_errata_piix4()  In acpi_processor_errata_piix4(), the pointer dev is first assigned an IDE device and then reassigned an ISA device:    dev = pci_get_subsys(..., PCI_DEVICE_ID_INTEL_82371AB, ...);   dev = pci_get_subsys(..., PCI_DEVICE_ID_INTEL_82371AB_0, ...);  If the first lookup succeeds but the second fails, dev becomes NULL. This leads to a potential null-pointer dereference when dev_dbg() is called:    if (errata.piix4.bmisx)     dev_dbg(\u0026dev-\u003edev, ...);  To prevent this, use two temporary pointers and retrieve each device independently, avoiding overwriting dev with a possible NULL value.  [ rjw: Subject adjustment, added an empty code line ]",
  "id": "DEBIAN-CVE-2026-43313",
  "modified": "2026-09-14T16:47:27.627314171Z",
  "published": "2026-05-08T14:16:39.710Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-43313"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-43313"
  ]
}