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FKIE_CVE-2026-74491

Vulnerability from fkie_nvd - Published: 2026-08-15 13:17 - Updated: 2026-08-17 06:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: of/address: Fix NULL bus dereference in of_pci_range_parser_one() The bus matching rework made of_match_bus() return NULL for nodes with ranges/dma-ranges but no local #address-cells. parser_init() stored that NULL bus, and the range iterator later dereferenced it. Reject such nodes in parser_init(), leaving an explicit empty iterator for callers that ignore the init return, and make of_dma_get_max_cpu_address() honour the init failure so a rejected node cannot clamp the DMA limit.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/88752b811f72aa7a16de6dad4b25031d7308673e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bba13ad17b1a11b3f1ed9b3a5d556191d7755a59
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eddd0159a8761a16a9d183676b03cf493417816e
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/of/address.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "88752b811f72aa7a16de6dad4b25031d7308673e",
              "status": "affected",
              "version": "64ee3cf096ac590e7da2ceac1c390546bff5e240",
              "versionType": "git"
            },
            {
              "lessThan": "eddd0159a8761a16a9d183676b03cf493417816e",
              "status": "affected",
              "version": "64ee3cf096ac590e7da2ceac1c390546bff5e240",
              "versionType": "git"
            },
            {
              "lessThan": "bba13ad17b1a11b3f1ed9b3a5d556191d7755a59",
              "status": "affected",
              "version": "64ee3cf096ac590e7da2ceac1c390546bff5e240",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/of/address.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof/address: Fix NULL bus dereference in of_pci_range_parser_one()\n\nThe bus matching rework made of_match_bus() return NULL for nodes with\nranges/dma-ranges but no local #address-cells. parser_init() stored that\nNULL bus, and the range iterator later dereferenced it.\n\nReject such nodes in parser_init(), leaving an explicit empty\niterator for callers that ignore the init return, and make\nof_dma_get_max_cpu_address() honour the init failure so a rejected node\ncannot clamp the DMA limit."
    }
  ],
  "id": "CVE-2026-74491",
  "lastModified": "2026-08-17T06:19:45.413",
  "metrics": {},
  "published": "2026-08-15T13:17:54.020",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/88752b811f72aa7a16de6dad4b25031d7308673e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bba13ad17b1a11b3f1ed9b3a5d556191d7755a59"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/eddd0159a8761a16a9d183676b03cf493417816e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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