CVE-2026-80574 (GCVE-0-2026-80574)

Vulnerability from cvelistv5 – Published: 2026-08-26 14:37 – Updated: 2026-08-26 14:37
VLAI
Title
Input: focaltech - fix array out-of-bounds in focaltech_process_rel_packet
Summary
In the Linux kernel, the following vulnerability has been resolved: Input: focaltech - fix array out-of-bounds in focaltech_process_rel_packet Make finger2 (and also finger1) unsigned, so that if the finger index in the packet is 0 then subtracting 1 creates an array index which overflows above the existing check for FOC_MAX_FINGERS, as the existing comment says it should, instead of writing to state->fingers[-1].
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 05be1d079ec0b3691783e4384b1ada82149ff7d2 , < 063b4c6a6f3fc01bca085c442000c9c100fdbd93 (git)
Affected: 05be1d079ec0b3691783e4384b1ada82149ff7d2 , < bb502d79acb9ac1e0a77fa8bc7b7b4729140b11f (git)
Affected: 05be1d079ec0b3691783e4384b1ada82149ff7d2 , < ca92c98b806839c108995b2bbff7061515bdfb53 (git)
Affected: 05be1d079ec0b3691783e4384b1ada82149ff7d2 , < 81b07470cb2937ceb74b00be88151582a322433b (git)
Affected: 05be1d079ec0b3691783e4384b1ada82149ff7d2 , < 6f6d5fe29efdf5001bc146fc292e6592cace93eb (git)
Affected: 05be1d079ec0b3691783e4384b1ada82149ff7d2 , < 83c265bfc084d77e2171d4b67362150ab38c935b (git)
Affected: 05be1d079ec0b3691783e4384b1ada82149ff7d2 , < 1842e47126816e56d30c4f856f9854fd7831066c (git)
Affected: 05be1d079ec0b3691783e4384b1ada82149ff7d2 , < 296736076b3fd078742651c719555a488624023a (git)
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Linux Linux Affected: 4.0
Unaffected: 0 , < 4.0 (semver)
Unaffected: 5.10.266 , ≤ 5.10.* (semver)
Unaffected: 5.15.217 , ≤ 5.15.* (semver)
Unaffected: 6.1.184 , ≤ 6.1.* (semver)
Unaffected: 6.6.153 , ≤ 6.6.* (semver)
Unaffected: 6.12.105 , ≤ 6.12.* (semver)
Unaffected: 6.18.46 , ≤ 6.18.* (semver)
Unaffected: 7.1.10 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: focaltech - fix array out-of-bounds in focaltech_process_rel_packet\n\nMake finger2 (and also finger1) unsigned, so that if the finger index in\nthe packet is 0 then subtracting 1 creates an array index which overflows\nabove the existing check for FOC_MAX_FINGERS, as the existing comment says\nit should, instead of writing to state-\u003efingers[-1]."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-26T14:37:34.353Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "datePublished": "2026-08-26T14:37:34.353Z",
    "dateReserved": "2026-08-26T14:34:25.768Z",
    "dateUpdated": "2026-08-26T14:37:34.353Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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  }
}



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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

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.