Vulnerability-Lookup

GHSA-5X7P-776C-F64J

Vulnerability from github – Published: 2026-05-01 15:30 – Updated: 2026-05-12 21:31

Details

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

hwmon: (tps53679) Fix array access with zero-length block read

i2c_smbus_read_block_data() can return 0, indicating a zero-length read. When this happens, tps53679_identify_chip() accesses buf[ret - 1] which is buf[-1], reading one byte before the buffer on the stack.

Fix by changing the check from "ret < 0" to "ret <= 0", treating a zero-length read as an error (-EIO), which prevents the out-of-bounds array access.

Also fix a typo in the adjacent comment: "if present" instead of duplicate "if".

Severity ?

7.1 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43005"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-01T15:16:44Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (tps53679) Fix array access with zero-length block read\n\ni2c_smbus_read_block_data() can return 0, indicating a zero-length\nread. When this happens, tps53679_identify_chip() accesses buf[ret - 1]\nwhich is buf[-1], reading one byte before the buffer on the stack.\n\nFix by changing the check from \"ret \u003c 0\" to \"ret \u003c= 0\", treating a\nzero-length read as an error (-EIO), which prevents the out-of-bounds\narray access.\n\nAlso fix a typo in the adjacent comment: \"if present\" instead of\nduplicate \"if\".",
  "id": "GHSA-5x7p-776c-f64j",
  "modified": "2026-05-12T21:31:25Z",
  "published": "2026-05-01T15:30:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43005"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e211f6aaa6a00fd0ee0c1eea5498f168c6725e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6999b4769e2a61c463158927102e8c07e3f69ba2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/79b7e588399bb55f4c10bea6ca41b6c3b944d2bb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-43005 (GCVE-0-2026-43005)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-11 22:15

Title

hwmon: (tps53679) Fix array access with zero-length block read

Summary

In the Linux kernel, the following vulnerability has been resolved: hwmon: (tps53679) Fix array access with zero-length block read i2c_smbus_read_block_data() can return 0, indicating a zero-length read. When this happens, tps53679_identify_chip() accesses buf[ret - 1] which is buf[-1], reading one byte before the buffer on the stack. Fix by changing the check from "ret < 0" to "ret <= 0", treating a zero-length read as an error (-EIO), which prevents the out-of-bounds array access. Also fix a typo in the adjacent comment: "if present" instead of duplicate "if".

Severity ?

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/79b7e588399bb55f4…
https://git.kernel.org/stable/c/6999b4769e2a61c46…
https://git.kernel.org/stable/c/0e211f6aaa6a00fd0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 75ca1e5875fe3f0b9d0e8615c69f49bc2c7fb65d , < 79b7e588399bb55f4c10bea6ca41b6c3b944d2bb (git) Affected: 75ca1e5875fe3f0b9d0e8615c69f49bc2c7fb65d , < 6999b4769e2a61c463158927102e8c07e3f69ba2 (git) Affected: 75ca1e5875fe3f0b9d0e8615c69f49bc2c7fb65d , < 0e211f6aaa6a00fd0ee0c1eea5498f168c6725e6 (git)
Linux	Linux	Affected: 6.17 Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.22 , ≤ 6.18.* (semver) Unaffected: 6.19.12 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/pmbus/tps53679.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "79b7e588399bb55f4c10bea6ca41b6c3b944d2bb",
              "status": "affected",
              "version": "75ca1e5875fe3f0b9d0e8615c69f49bc2c7fb65d",
              "versionType": "git"
            },
            {
              "lessThan": "6999b4769e2a61c463158927102e8c07e3f69ba2",
              "status": "affected",
              "version": "75ca1e5875fe3f0b9d0e8615c69f49bc2c7fb65d",
              "versionType": "git"
            },
            {
              "lessThan": "0e211f6aaa6a00fd0ee0c1eea5498f168c6725e6",
              "status": "affected",
              "version": "75ca1e5875fe3f0b9d0e8615c69f49bc2c7fb65d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/pmbus/tps53679.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.22",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.22",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (tps53679) Fix array access with zero-length block read\n\ni2c_smbus_read_block_data() can return 0, indicating a zero-length\nread. When this happens, tps53679_identify_chip() accesses buf[ret - 1]\nwhich is buf[-1], reading one byte before the buffer on the stack.\n\nFix by changing the check from \"ret \u003c 0\" to \"ret \u003c= 0\", treating a\nzero-length read as an error (-EIO), which prevents the out-of-bounds\narray access.\n\nAlso fix a typo in the adjacent comment: \"if present\" instead of\nduplicate \"if\"."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:15:51.731Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/79b7e588399bb55f4c10bea6ca41b6c3b944d2bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/6999b4769e2a61c463158927102e8c07e3f69ba2"
        },
        {
          "url": "https://git.kernel.org/stable/c/0e211f6aaa6a00fd0ee0c1eea5498f168c6725e6"
        }
      ],
      "title": "hwmon: (tps53679) Fix array access with zero-length block read",
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        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43005",
    "datePublished": "2026-05-01T14:15:13.513Z",
    "dateReserved": "2026-05-01T14:12:55.974Z",
    "dateUpdated": "2026-05-11T22:15:51.731Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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-5X7P-776C-F64J

CVE-2026-43005 (GCVE-0-2026-43005)

Tags

Sightings

Nomenclature