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CVE-2026-80759 (GCVE-0-2026-80759)

Vulnerability from cvelistv5 – Published: 2026-09-04 15:12 – Updated: 2026-09-04 15:12
VLAI
Title
Bluetooth: hci_aml: validate firmware segment lengths
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_aml: validate firmware segment lengths aml_download_firmware() reads two lengths from the firmware header and uses them to build pointers before checking that the header and segment data are present. A truncated or inconsistent firmware image can make the driver read past firmware->data while constructing TCI commands. Reject images shorter than the header and ensure that the ICCM and DCCM ranges fit within the loaded firmware before downloading either segment.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 37bac77e4649e8158698a60addc22ec4faf5649a , < 7733b01ed13685773ccda91035a46f87d4cfef7c (git)
Affected: 37bac77e4649e8158698a60addc22ec4faf5649a , < e1534d49a7b8ba728e84b020f6d802aa1cb759d9 (git)
Affected: 37bac77e4649e8158698a60addc22ec4faf5649a , < 6c70253462902d835e843b470f74aa816d60af80 (git)
Affected: 37bac77e4649e8158698a60addc22ec4faf5649a , < 2763b8bcb504e30ec955474f51b99ce42fc62f3b (git)
Affected: 37bac77e4649e8158698a60addc22ec4faf5649a , < 2bf6b9baca9372ea51b6d0f2820dc9bf29a83ef4 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.106 , ≤ 6.12.* (semver)
Unaffected: 6.18.47 , ≤ 6.18.* (semver)
Unaffected: 7.1.11 , ≤ 7.1.* (semver)
Unaffected: 7.2.1 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/bluetooth/hci_aml.c"
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              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                },
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                },
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_aml: validate firmware segment lengths\n\naml_download_firmware() reads two lengths from the firmware header and\nuses them to build pointers before checking that the header and segment\ndata are present. A truncated or inconsistent firmware image can make\nthe driver read past firmware-\u003edata while constructing TCI commands.\n\nReject images shorter than the header and ensure that the ICCM and DCCM\nranges fit within the loaded firmware before downloading either segment."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-04T15:12:28.900Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/7733b01ed13685773ccda91035a46f87d4cfef7c"
        },
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/2bf6b9baca9372ea51b6d0f2820dc9bf29a83ef4"
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      ],
      "title": "Bluetooth: hci_aml: validate firmware segment lengths",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80759",
    "datePublished": "2026-09-04T15:12:28.900Z",
    "dateReserved": "2026-08-26T14:34:25.791Z",
    "dateUpdated": "2026-09-04T15:12:28.900Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-09-15",
      "epss": "0.00168",
      "percentile": "0.06371"
    },
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    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-09-07T16:20:14Z",
      "cve": "CVE-2026-80759",
      "id": "CVE-2026-80759",
      "initial_release_date": "2026-09-05T00:28:03Z",
      "product_status:known_not_affected": "353",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80759",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80759.json",
      "version": "4"
    }
  }
}



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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.