CVE-2025-39699 (GCVE-0-2025-39699)
Vulnerability from cvelistv5
Published
2025-09-05 17:21
Modified
2025-09-29 05:57
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: prevent NULL deref in iova_to_phys The riscv_iommu_pte_fetch() function returns either NULL for unmapped/never-mapped iova, or a valid leaf pte pointer that requires no further validation. riscv_iommu_iova_to_phys() failed to handle NULL returns. Prevent null pointer dereference in riscv_iommu_iova_to_phys(), and remove the pte validation.
References
Impacted products
Vendor Product Version
Linux Linux Version: 488ffbf181718b9ad8c1838cb249d60973e78eda
Version: 488ffbf181718b9ad8c1838cb249d60973e78eda
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          "programFiles": [
            "drivers/iommu/riscv/iommu.c"
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                  "vulnerable": true
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/riscv: prevent NULL deref in iova_to_phys\n\nThe riscv_iommu_pte_fetch() function returns either NULL for\nunmapped/never-mapped iova, or a valid leaf pte pointer that\nrequires no further validation.\n\nriscv_iommu_iova_to_phys() failed to handle NULL returns.\nPrevent null pointer dereference in\nriscv_iommu_iova_to_phys(), and remove the pte validation."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-29T05:57:40.204Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/220c491490255b656672bb572b18460cd9155926"
        },
        {
          "url": "https://git.kernel.org/stable/c/99d4d1a070870aa08163af8ce0522992b7f35d8c"
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      "title": "iommu/riscv: prevent NULL deref in iova_to_phys",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39699",
    "datePublished": "2025-09-05T17:21:05.379Z",
    "dateReserved": "2025-04-16T07:20:57.115Z",
    "dateUpdated": "2025-09-29T05:57:40.204Z",
    "state": "PUBLISHED"
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  }
}


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