CVE-2026-74532 (GCVE-0-2026-74532)

Vulnerability from cvelistv5 – Published: 2026-08-15 12:27 – Updated: 2026-08-17 05:21
VLAI
Title
Bluetooth: btintel: Validate length before parsing diagnostics TLV
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: Validate length before parsing diagnostics TLV btintel_diagnostics() accesses tlv->val[0] without first validating that the diagnostics VSE is long enough to contain that field, so may cause reading data beyond the received frame. Fix by validating the length before access.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: af395330abed142a2685bf3d17a938544816bf3c , < c31be902ccbbb0b2c23159a1481dce80d1f9753d (git)
Affected: af395330abed142a2685bf3d17a938544816bf3c , < dd20e30bdbd707ea8ced581f3d7f9e9854634b17 (git)
Affected: af395330abed142a2685bf3d17a938544816bf3c , < c618a9a5b08ea2e17bddf4e948be9f75d408fca4 (git)
Affected: af395330abed142a2685bf3d17a938544816bf3c , < 6ec9c3dc52302b891513f608f5fb478349b15ab3 (git)
Affected: af395330abed142a2685bf3d17a938544816bf3c , < b640ff9af3c809ff5ea2077fbba17df1594ec1e4 (git)
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Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.6.151 , ≤ 6.6.* (semver)
Unaffected: 6.12.103 , ≤ 6.12.* (semver)
Unaffected: 6.18.44 , ≤ 6.18.* (semver)
Unaffected: 7.1.8 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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        {
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          "programFiles": [
            "drivers/bluetooth/btintel.c"
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      "cpeApplicability": [
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              "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\nBluetooth: btintel: Validate length before parsing diagnostics TLV\n\nbtintel_diagnostics() accesses tlv-\u003eval[0] without first validating\nthat the diagnostics VSE is long enough to contain that field, so\nmay cause reading data beyond the received frame.\n\nFix by validating the length before access."
        }
      ],
      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        },
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          "url": "https://git.kernel.org/stable/c/dd20e30bdbd707ea8ced581f3d7f9e9854634b17"
        },
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        {
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      "title": "Bluetooth: btintel: Validate length before parsing diagnostics TLV",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74532",
    "datePublished": "2026-08-15T12:27:46.597Z",
    "dateReserved": "2026-08-15T05:44:03.912Z",
    "dateUpdated": "2026-08-17T05:21:15.978Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-08-28",
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      "percentile": "0.06288"
    },
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-19T17:40:33+00:00",
      "cve": "CVE-2026-74532",
      "id": "CVE-2026-74532",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: btintel: Validate length before parsing diagnostics TLV",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74532.json",
      "version": "3"
    }
  }
}



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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.