{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d68beb276ba26cec47350a6d468e967673ee0c56"
            },
            {
              "fixed": "3808bab5d95ae79e333e11f6a73d178e084c645d"
            },
            {
              "fixed": "0acbc621341aca4eb94d9c2f43e1ab273ff088f0"
            },
            {
              "fixed": "c3b8ee84a965058b41275069d4696f37a8b14bf6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.44"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74573.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu-v3-iommufd: Require exactly one Stream ID for a vDEVICE\n\narm_vsmmu_vsid_to_sid() maps a guest's vSID to a single physical Stream ID\ntaken from master-\u003estreams[0], assuming a device has exactly one stream. A\ndevice with several streams gets only its first one mapped, so a guest vSID\ninvalidation cannot reach the others' ATC and IOTLB entries; a device with\nnone makes master-\u003estreams a ZERO_SIZE_PTR, read out of bounds.\n\nAdd an arm_vsmmu_vdevice_init() op to reject the vDEVICE with -EOPNOTSUPP\nwhen master-\u003enum_streams is not one, rather than mapping it silently.",
  "id": "CVE-2026-74573",
  "modified": "2026-08-17T03:36:39.392602919Z",
  "published": "2026-08-15T12:28:11.935Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0acbc621341aca4eb94d9c2f43e1ab273ff088f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3808bab5d95ae79e333e11f6a73d178e084c645d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3b8ee84a965058b41275069d4696f37a8b14bf6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74573.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74573"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "iommu/arm-smmu-v3-iommufd: Require exactly one Stream ID for a vDEVICE"
}