Vulnerability-Lookup

GHSA-2789-V55F-R7V6

Vulnerability from github – Published: 2025-07-03 09:30 – Updated: 2025-11-20 21:30

Details

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

iio: adc: ad4851: fix ad4858 chan pointer handling

The pointer returned from ad4851_parse_channels_common() is incremented internally as each channel is populated. In ad4858_parse_channels(), the same pointer was further incremented while setting ext_scan_type fields for each channel. This resulted in indio_dev->channels being set to a pointer past the end of the allocated array, potentially causing memory corruption or undefined behavior.

Fix this by iterating over the channels using an explicit index instead of incrementing the pointer. This preserves the original base pointer and ensures all channel metadata is set correctly.

Severity ?

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38133"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-03T09:15:27Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: ad4851: fix ad4858 chan pointer handling\n\nThe pointer returned from ad4851_parse_channels_common() is incremented\ninternally as each channel is populated. In ad4858_parse_channels(),\nthe same pointer was further incremented while setting ext_scan_type\nfields for each channel. This resulted in indio_dev-\u003echannels being set\nto a pointer past the end of the allocated array, potentially causing\nmemory corruption or undefined behavior.\n\nFix this by iterating over the channels using an explicit index instead\nof incrementing the pointer. This preserves the original base pointer\nand ensures all channel metadata is set correctly.",
  "id": "GHSA-2789-v55f-r7v6",
  "modified": "2025-11-20T21:30:29Z",
  "published": "2025-07-03T09:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38133"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/499a8cee812588905cc940837e69918c1649a19e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c3b9e1167d072ce2d01cafec7866647cf8d3616"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-38133 (GCVE-0-2025-38133)

Vulnerability from cvelistv5 – Published: 2025-07-03 08:35 – Updated: 2025-07-28 04:13

Title

iio: adc: ad4851: fix ad4858 chan pointer handling

Summary

In the Linux kernel, the following vulnerability has been resolved: iio: adc: ad4851: fix ad4858 chan pointer handling The pointer returned from ad4851_parse_channels_common() is incremented internally as each channel is populated. In ad4858_parse_channels(), the same pointer was further incremented while setting ext_scan_type fields for each channel. This resulted in indio_dev->channels being set to a pointer past the end of the allocated array, potentially causing memory corruption or undefined behavior. Fix this by iterating over the channels using an explicit index instead of incrementing the pointer. This preserves the original base pointer and ensures all channel metadata is set correctly.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/6c3b9e1167d072ce2…
	https://git.kernel.org/stable/c/499a8cee812588905…

Impacted products

Vendor

Product

Version

Linux

Affected: 6250803fe2ec92be32a4df1c3a39c4a460d5bd58 , < 6c3b9e1167d072ce2d01cafec7866647cf8d3616 (git)
Affected: 6250803fe2ec92be32a4df1c3a39c4a460d5bd58 , < 499a8cee812588905cc940837e69918c1649a19e (git)

Linux

Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.15.3 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/adc/ad4851.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6c3b9e1167d072ce2d01cafec7866647cf8d3616",
              "status": "affected",
              "version": "6250803fe2ec92be32a4df1c3a39c4a460d5bd58",
              "versionType": "git"
            },
            {
              "lessThan": "499a8cee812588905cc940837e69918c1649a19e",
              "status": "affected",
              "version": "6250803fe2ec92be32a4df1c3a39c4a460d5bd58",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.3",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: ad4851: fix ad4858 chan pointer handling\n\nThe pointer returned from ad4851_parse_channels_common() is incremented\ninternally as each channel is populated. In ad4858_parse_channels(),\nthe same pointer was further incremented while setting ext_scan_type\nfields for each channel. This resulted in indio_dev-\u003echannels being set\nto a pointer past the end of the allocated array, potentially causing\nmemory corruption or undefined behavior.\n\nFix this by iterating over the channels using an explicit index instead\nof incrementing the pointer. This preserves the original base pointer\nand ensures all channel metadata is set correctly."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:13:08.930Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/6c3b9e1167d072ce2d01cafec7866647cf8d3616"
        },
        {
          "url": "https://git.kernel.org/stable/c/499a8cee812588905cc940837e69918c1649a19e"
        }
      ],
      "title": "iio: adc: ad4851: fix ad4858 chan pointer handling",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38133",
    "datePublished": "2025-07-03T08:35:36.802Z",
    "dateReserved": "2025-04-16T04:51:23.987Z",
    "dateUpdated": "2025-07-28T04:13:08.930Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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-2789-V55F-R7V6

CVE-2025-38133 (GCVE-0-2025-38133)

Tags

Sightings

Nomenclature