FKIE_CVE-2026-64220

Vulnerability from fkie_nvd - Published: 2026-07-24 16:16 - Updated: 2026-07-30 14:59
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: device property: set fwnode->secondary to NULL in fwnode_init() If a firmware node is allocated on the stack (for instance: temporary software node whose life-time we control) or on the heap - but using a non-zeroing allocation function - and initialized using fwnode_init(), its secondary pointer will contain uninitalized memory which likely will be neither NULL nor IS_ERR() and so may end up being dereferenced (for example: in dev_to_swnode()). Set fwnode->secondary to NULL on initialization.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/215c90ee656114f5e8c32408228d97082f8e0eef
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/34bf74b1fd2e4a44e27821a329204caf09df2976
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/371f53925a6714d0aa35f1aefdffc3e8cd62f480
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3f1024deeab3b5443c29b3de4fe475e87309b8fa
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/508fd8ab158abd04b7f7d0f707cd6d6c405df4ea
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f0e211d6539fae800217c10797993b7592d6ab01
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f59e686c778cb41b8f7aa8fab2afd6a01afb3d47
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/linux/fwnode.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f0e211d6539fae800217c10797993b7592d6ab01",
              "status": "affected",
              "version": "01bb86b380a306bd937c96da36f66429f3362137",
              "versionType": "git"
            },
            {
              "lessThan": "3f1024deeab3b5443c29b3de4fe475e87309b8fa",
              "status": "affected",
              "version": "01bb86b380a306bd937c96da36f66429f3362137",
              "versionType": "git"
            },
            {
              "lessThan": "371f53925a6714d0aa35f1aefdffc3e8cd62f480",
              "status": "affected",
              "version": "01bb86b380a306bd937c96da36f66429f3362137",
              "versionType": "git"
            },
            {
              "lessThan": "34bf74b1fd2e4a44e27821a329204caf09df2976",
              "status": "affected",
              "version": "01bb86b380a306bd937c96da36f66429f3362137",
              "versionType": "git"
            },
            {
              "lessThan": "508fd8ab158abd04b7f7d0f707cd6d6c405df4ea",
              "status": "affected",
              "version": "01bb86b380a306bd937c96da36f66429f3362137",
              "versionType": "git"
            },
            {
              "lessThan": "f59e686c778cb41b8f7aa8fab2afd6a01afb3d47",
              "status": "affected",
              "version": "01bb86b380a306bd937c96da36f66429f3362137",
              "versionType": "git"
            },
            {
              "lessThan": "215c90ee656114f5e8c32408228d97082f8e0eef",
              "status": "affected",
              "version": "01bb86b380a306bd937c96da36f66429f3362137",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/linux/fwnode.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
            },
            {
              "lessThan": "5.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.92",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "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\ndevice property: set fwnode-\u003esecondary to NULL in fwnode_init()\n\nIf a firmware node is allocated on the stack (for instance: temporary\nsoftware node whose life-time we control) or on the heap - but using a\nnon-zeroing allocation function - and initialized using fwnode_init(),\nits secondary pointer will contain uninitalized memory which likely will\nbe neither NULL nor IS_ERR() and so may end up being dereferenced (for\nexample: in dev_to_swnode()). Set fwnode-\u003esecondary to NULL on\ninitialization."
    }
  ],
  "id": "CVE-2026-64220",
  "lastModified": "2026-07-30T14:59:47.950",
  "metrics": {},
  "published": "2026-07-24T16:16:49.797",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/215c90ee656114f5e8c32408228d97082f8e0eef"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/34bf74b1fd2e4a44e27821a329204caf09df2976"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/371f53925a6714d0aa35f1aefdffc3e8cd62f480"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3f1024deeab3b5443c29b3de4fe475e87309b8fa"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/508fd8ab158abd04b7f7d0f707cd6d6c405df4ea"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f0e211d6539fae800217c10797993b7592d6ab01"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f59e686c778cb41b8f7aa8fab2afd6a01afb3d47"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}



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