{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "918eb5c856f6ce4cf93b4b38e4b5e156905c5943"
            },
            {
              "fixed": "076a4f5b1fc2016b973a12bc2ebb9b730e5e1e48"
            },
            {
              "fixed": "735698e81f798b4c02dcb6291ffbdd1b962c8c66"
            },
            {
              "fixed": "421f5ab135cd4a1353891e5bf2602cfc3c01afc7"
            },
            {
              "fixed": "61f0d437988e5730b04442f6a7d30a9907339f2a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.12.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90426.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/tegra241-cmdqv: Free the error IRQ before tearing down VINTFs\n\ntegra241_cmdqv_remove() tears each VINTF down first, then calls free_irq().\nTearing a VINTF down frees vintf0 and clears cmdqv-\u003evintfs[0]. An error in\nthat window makes tegra241_cmdqv_isr() read the stale slot and hand it to\ntegra241_vintf0_handle_error(), which dereferences a NULL or freed pointer.\n\nFree the IRQ before tearing the VINTFs down. free_irq() waits for in-flight\nhandlers to finish and blocks new ones, so no ISR can observe a VINTF as it\nis torn down.\n\nNote: a user-owned VINTF (viommu) could outlive this teardown, which unmaps\ncmdqv-\u003ebase and frees cmdqv-\u003evintfs, so a later viommu close then touches\nfreed memory. This is neither introduced nor fixed here: a physical IOMMU\nis not a pluggable device, so iommufd by design holds no reference on the\none behind a viommu, and this teardown is not expected while that viommu is\nstill alive.",
  "id": "CVE-2026-90426",
  "modified": "2026-09-19T03:30:14.948016287Z",
  "published": "2026-09-17T16:09:48.460Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/076a4f5b1fc2016b973a12bc2ebb9b730e5e1e48"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/421f5ab135cd4a1353891e5bf2602cfc3c01afc7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61f0d437988e5730b04442f6a7d30a9907339f2a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/735698e81f798b4c02dcb6291ffbdd1b962c8c66"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90426.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90426"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "iommu/tegra241-cmdqv: Free the error IRQ before tearing down VINTFs"
}