github - ghsa-jwx3-9wmp-w467

GHSA-JWX3-9WMP-W467

Vulnerability from github – Published: 2025-12-24 12:30 – Updated: 2025-12-24 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

iio: core: Prevent invalid memory access when there is no parent

Commit 813665564b3d ("iio: core: Convert to use firmware node handle instead of OF node") switched the kind of nodes to use for label retrieval in device registration. Probably an unwanted change in that commit was that if the device has no parent then NULL pointer is accessed. This is what happens in the stock IIO dummy driver when a new entry is created in configfs:

# mkdir /sys/kernel/config/iio/devices/dummy/foo BUG: kernel NULL pointer dereference, address: ... ... Call Trace: __iio_device_register iio_dummy_probe

Since there seems to be no reason to make a parent device of an IIO dummy device mandatory, let’s prevent the invalid memory access in __iio_device_register when the parent device is NULL. With this change, the IIO dummy driver works fine with configfs.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-54027"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T11:15:55Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: core: Prevent invalid memory access when there is no parent\n\nCommit 813665564b3d (\"iio: core: Convert to use firmware node handle\ninstead of OF node\") switched the kind of nodes to use for label\nretrieval in device registration.  Probably an unwanted change in that\ncommit was that if the device has no parent then NULL pointer is\naccessed.  This is what happens in the stock IIO dummy driver when a\nnew entry is created in configfs:\n\n  # mkdir /sys/kernel/config/iio/devices/dummy/foo\n  BUG: kernel NULL pointer dereference, address: ...\n  ...\n  Call Trace:\n  __iio_device_register\n  iio_dummy_probe\n\nSince there seems to be no reason to make a parent device of an IIO\ndummy device mandatory, let\u2019s prevent the invalid memory access in\n__iio_device_register when the parent device is NULL.  With this\nchange, the IIO dummy driver works fine with configfs.",
  "id": "GHSA-jwx3-9wmp-w467",
  "modified": "2025-12-24T12:30:28Z",
  "published": "2025-12-24T12:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54027"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/312f04ede209f0a186799fe8e64a19b49700d5dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a4b34cccff14ce74bb7d77fbfd56e7c9d7c28a97"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2a69969908fcaf68596dfc04369af0fe2e1d2f7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2023-54027 (GCVE-0-2023-54027)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:55 – Updated: 2025-12-24 10:55

Title

iio: core: Prevent invalid memory access when there is no parent

Summary

In the Linux kernel, the following vulnerability has been resolved: iio: core: Prevent invalid memory access when there is no parent Commit 813665564b3d ("iio: core: Convert to use firmware node handle instead of OF node") switched the kind of nodes to use for label retrieval in device registration. Probably an unwanted change in that commit was that if the device has no parent then NULL pointer is accessed. This is what happens in the stock IIO dummy driver when a new entry is created in configfs: # mkdir /sys/kernel/config/iio/devices/dummy/foo BUG: kernel NULL pointer dereference, address: ... ... Call Trace: __iio_device_register iio_dummy_probe Since there seems to be no reason to make a parent device of an IIO dummy device mandatory, let’s prevent the invalid memory access in __iio_device_register when the parent device is NULL. With this change, the IIO dummy driver works fine with configfs.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/312f04ede209f0a18…
	https://git.kernel.org/stable/c/a4b34cccff14ce74b…
	https://git.kernel.org/stable/c/b2a69969908fcaf68…

Impacted products

Vendor

Product

Version

Linux

Affected: 813665564b3d7c74412fe2877520f1d254ce948a , < 312f04ede209f0a186799fe8e64a19b49700d5dc (git)
Affected: 813665564b3d7c74412fe2877520f1d254ce948a , < a4b34cccff14ce74bb7d77fbfd56e7c9d7c28a97 (git)
Affected: 813665564b3d7c74412fe2877520f1d254ce948a , < b2a69969908fcaf68596dfc04369af0fe2e1d2f7 (git)

Linux

Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.46 , ≤ 6.1.* (semver)
Unaffected: 6.4.11 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/industrialio-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "312f04ede209f0a186799fe8e64a19b49700d5dc",
              "status": "affected",
              "version": "813665564b3d7c74412fe2877520f1d254ce948a",
              "versionType": "git"
            },
            {
              "lessThan": "a4b34cccff14ce74bb7d77fbfd56e7c9d7c28a97",
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              "version": "813665564b3d7c74412fe2877520f1d254ce948a",
              "versionType": "git"
            },
            {
              "lessThan": "b2a69969908fcaf68596dfc04369af0fe2e1d2f7",
              "status": "affected",
              "version": "813665564b3d7c74412fe2877520f1d254ce948a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.11",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.46",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
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                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: core: Prevent invalid memory access when there is no parent\n\nCommit 813665564b3d (\"iio: core: Convert to use firmware node handle\ninstead of OF node\") switched the kind of nodes to use for label\nretrieval in device registration.  Probably an unwanted change in that\ncommit was that if the device has no parent then NULL pointer is\naccessed.  This is what happens in the stock IIO dummy driver when a\nnew entry is created in configfs:\n\n  # mkdir /sys/kernel/config/iio/devices/dummy/foo\n  BUG: kernel NULL pointer dereference, address: ...\n  ...\n  Call Trace:\n  __iio_device_register\n  iio_dummy_probe\n\nSince there seems to be no reason to make a parent device of an IIO\ndummy device mandatory, let\u2019s prevent the invalid memory access in\n__iio_device_register when the parent device is NULL.  With this\nchange, the IIO dummy driver works fine with configfs."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T10:55:55.890Z",
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        "shortName": "Linux"
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      "title": "iio: core: Prevent invalid memory access when there is no parent",
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    "cveId": "CVE-2023-54027",
    "datePublished": "2025-12-24T10:55:55.890Z",
    "dateReserved": "2025-12-24T10:53:46.180Z",
    "dateUpdated": "2025-12-24T10:55:55.890Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-JWX3-9WMP-W467

CVE-2023-54027 (GCVE-0-2023-54027)

Tags

Sightings

Nomenclature