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

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-01 14:15
VLAI?
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
References
Impacted products
Vendor Product Version
Linux Linux Affected: 75ca1e5875fe3f0b9d0e8615c69f49bc2c7fb65d , < 79b7e588399bb55f4c10bea6ca41b6c3b944d2bb (git)
Affected: 75ca1e5875fe3f0b9d0e8615c69f49bc2c7fb65d , < 6999b4769e2a61c463158927102e8c07e3f69ba2 (git)
Affected: 75ca1e5875fe3f0b9d0e8615c69f49bc2c7fb65d , < 0e211f6aaa6a00fd0ee0c1eea5498f168c6725e6 (git)
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    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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          "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\"."
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.



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