iommu/tegra241-cmdqv: Fix VINTF0 leak on the init-failure path

{
  "id": "54272586b068e475c1583b85d75beebd396d58c292ab15692fefbdc80a729437",
  "url": "https://osv.dev/vulnerability/CVE-2026-90424",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "iommu/tegra241-cmdqv: Fix VINTF0 leak on the init-failure path",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: iommu/tegra241-cmdqv: Fix VINTF0 leak on the init-failure path tegra241_cmdqv_init_structures() allocates VINTF0 with kzalloc_obj(), inits it, and preallocates its logical VCMDQs. Two of its error paths leak. When tegra241_cmdqv_init_vintf() fails it returns before VINTF0 reaches the cmdqv->vintfs[] array, so the devres unwind on probe failure cannot reach it; free it directly there. A later VCMDQ preallocation failure instead leaves VINTF0 published, and so this time the unwind does reach tegra241_cmdqv_remove_vintf(), which then frees it from vintf->hyp_own. But tegra241_vintf_hw_init() sets that flag only afterward, from a HW read-back, so the still-uninited VINTF0 reads as guest-owned and leaks, with mutex_destroy() and ida_destroy() run on fields it never set up. Decide ownership from vintf->idx instead, the index assigned when its id is allocated: idx 0 is the kernel-owned VINTF0, while idx >= 1 marks a guest VINTF. So the in-kernel free decision in tegra241_cmdqv_remove_vintf() and tegra241_vintf_free_lvcmdq() now keys on idx too, and hyp_own stays a pure HW-readback state.",
    "evidence": "osv:CVE-2026-90424",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.114",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.52",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-90424",
      "aliases": [
        "CVE-2026-90424"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "918eb5c856f6ce4cf93b4b38e4b5e156905c5943"
                },
                {
                  "fixed": "05a1405d0cba3d8253261b02eb65e5cd3ca09ab3"
                },
                {
                  "fixed": "1d2271d7df5230e4ce36bdafd17524bd004f3b3f"
                },
                {
                  "fixed": "417190bde0fda4ee857999a722ca90163fbec587"
                },
                {
                  "fixed": "f40f3144477314b489e4bc209c06cb51679fe82b"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90424.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.12.0"
                },
                {
                  "fixed": "6.12.114"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.52"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90424.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.966207267Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/05a1405d0cba3d8253261b02eb65e5cd3ca09ab3",
        "https://git.kernel.org/stable/c/1d2271d7df5230e4ce36bdafd17524bd004f3b3f",
        "https://git.kernel.org/stable/c/417190bde0fda4ee857999a722ca90163fbec587",
        "https://git.kernel.org/stable/c/f40f3144477314b489e4bc209c06cb51679fe82b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90424.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90424",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90424.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-90424",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 517223,
  "published_at": "2026-09-17T16:09:47.165+00:00"
}