Vulnerability-Lookup

FKIE_CVE-2026-43005

Vulnerability from fkie_nvd - Published: 2026-05-01 15:16 - Updated: 2026-05-12 19:27

Severity ?

7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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".

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0e211f6aaa6a00fd0ee0c1eea5498f168c6725e6	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6999b4769e2a61c463158927102e8c07e3f69ba2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/79b7e588399bb55f4c10bea6ca41b6c3b944d2bb	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.17
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

{
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        {
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              "versionEndExcluding": "6.18.22",
              "versionStartIncluding": "6.17.1",
              "vulnerable": true
            },
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              "versionEndExcluding": "6.19.12",
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              "vulnerable": true
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      "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\"."
    }
  ],
  "id": "CVE-2026-43005",
  "lastModified": "2026-05-12T19:27:29.520",
  "metrics": {
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          "attackVector": "LOCAL",
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          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2026-05-01T15:16:44.343",
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  ]
}

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

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)

Show details on NVD website

JSON

To clipboard

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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "drivers/hwmon/pmbus/tps53679.c"
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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

FKIE_CVE-2026-43005

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

Tags

Sightings

Nomenclature