{
  "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:  iommu/arm-smmu-v3-iommufd: Require exactly one Stream ID for a vDEVICE  arm_vsmmu_vsid_to_sid() maps a guest's vSID to a single physical Stream ID taken from master-\u003estreams[0], assuming a device has exactly one stream. A device with several streams gets only its first one mapped, so a guest vSID invalidation cannot reach the others' ATC and IOTLB entries; a device with none makes master-\u003estreams a ZERO_SIZE_PTR, read out of bounds.  Add an arm_vsmmu_vdevice_init() op to reject the vDEVICE with -EOPNOTSUPP when master-\u003enum_streams is not one, rather than mapping it silently.",
  "id": "DEBIAN-CVE-2026-74573",
  "modified": "2026-09-14T16:47:44.420667015Z",
  "published": "2026-08-15T13:18:02.963Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-74573"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-74573"
  ]
}