CVE-2026-90424 (GCVE-0-2026-90424)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-09-17 16:09
VLAI
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 , < 1d2271d7df5230e4ce36bdafd17524bd004f3b3f (git)
Affected: 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 , < 417190bde0fda4ee857999a722ca90163fbec587 (git)
Affected: 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 , < f40f3144477314b489e4bc209c06cb51679fe82b (git)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/tegra241-cmdqv: Fix VINTF0 leak on the init-failure path\n\ntegra241_cmdqv_init_structures() allocates VINTF0 with kzalloc_obj(), inits\nit, and preallocates its logical VCMDQs. Two of its error paths leak.\n\nWhen tegra241_cmdqv_init_vintf() fails it returns before VINTF0 reaches the\ncmdqv-\u003evintfs[] array, so the devres unwind on probe failure cannot reach\nit; free it directly there.\n\nA later VCMDQ preallocation failure instead leaves VINTF0 published, and so\nthis time the unwind does reach tegra241_cmdqv_remove_vintf(), which then\nfrees it from vintf-\u003ehyp_own. But tegra241_vintf_hw_init() sets that flag\nonly afterward, from a HW read-back, so the still-uninited VINTF0 reads as\nguest-owned and leaks, with mutex_destroy() and ida_destroy() run on fields\nit never set up.\n\nDecide ownership from vintf-\u003eidx instead, the index assigned when its id is\nallocated: idx 0 is the kernel-owned VINTF0, while idx \u003e= 1 marks a guest\nVINTF. So the in-kernel free decision in tegra241_cmdqv_remove_vintf() and\ntegra241_vintf_free_lvcmdq() now keys on idx too, and hyp_own stays a pure\nHW-readback state."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:09:47.165Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/f40f3144477314b489e4bc209c06cb51679fe82b"
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      ],
      "title": "iommu/tegra241-cmdqv: Fix VINTF0 leak on the init-failure path",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90424",
    "datePublished": "2026-09-17T16:09:47.165Z",
    "dateReserved": "2026-09-11T19:38:34.814Z",
    "dateUpdated": "2026-09-17T16:09:47.165Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-09-29",
      "epss": "0.00206",
      "percentile": "0.09564"
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        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/tegra241-cmdqv: Fix VINTF0 leak on the init-failure path\n\ntegra241_cmdqv_init_structures() allocates VINTF0 with kzalloc_obj(), inits\nit, and preallocates its logical VCMDQs. Two of its error paths leak.\n\nWhen tegra241_cmdqv_init_vintf() fails it returns before VINTF0 reaches the\ncmdqv-\u003evintfs[] array, so the devres unwind on probe failure cannot reach\nit; free it directly there.\n\nA later VCMDQ preallocation failure instead leaves VINTF0 published, and so\nthis time the unwind does reach tegra241_cmdqv_remove_vintf(), which then\nfrees it from vintf-\u003ehyp_own. But tegra241_vintf_hw_init() sets that flag\nonly afterward, from a HW read-back, so the still-uninited VINTF0 reads as\nguest-owned and leaks, with mutex_destroy() and ida_destroy() run on fields\nit never set up.\n\nDecide ownership from vintf-\u003eidx instead, the index assigned when its id is\nallocated: idx 0 is the kernel-owned VINTF0, while idx \u003e= 1 marks a guest\nVINTF. So the in-kernel free decision in tegra241_cmdqv_remove_vintf() and\ntegra241_vintf_free_lvcmdq() now keys on idx too, and hyp_own stays a pure\nHW-readback state."
          }
        ],
        "id": "CVE-2026-90424",
        "lastModified": "2026-09-17T17:17:47.060",
        "metrics": {},
        "published": "2026-09-17T17:17:47.060",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "vulnStatus": "Received"
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      "current_release_date": "2026-09-22T16:28:09Z",
      "cve": "CVE-2026-90424",
      "id": "CVE-2026-90424",
      "initial_release_date": "2026-09-18T00:16:24Z",
      "product_status:known_affected": "29",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-90424",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-90424.json",
      "version": "4"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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