CVE-2026-98247 (GCVE-0-2026-98247)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:45 – Updated: 2026-10-06 08:45
VLAI
Title
Bluetooth: hci_codec: validate vendor codec count length
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_codec: validate vendor codec count length The Read Local Supported Codecs parsers consume the variable-sized standard codec array before parsing the vendor codec count. Although the initial reply-size check includes a vendor count byte in the fixed layout, it does not guarantee that the byte remains after the standard codec array. If a controller reply ends immediately after that array, calculating the vendor codec array size reads vnd_codecs->num beyond the skb data. Use skb_pull_data() to validate and consume each codec header before using its count in both command variants.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 54/100 over 6633 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8961987f3f5fa2f2618e72304d013c8dd5e604a6 , < 9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8 (git)
Affected: 8961987f3f5fa2f2618e72304d013c8dd5e604a6 , < a6da782fefae611e68a1aa79644065fc8ca5abcd (git)
Affected: 8961987f3f5fa2f2618e72304d013c8dd5e604a6 , < e4cfd3c4299105237458b27958bd7b0aa4c60795 (git)
Affected: 8961987f3f5fa2f2618e72304d013c8dd5e604a6 , < f49a543d76d48f184b34225d9c0e2fc4cbdea8ec (git)
Affected: 8961987f3f5fa2f2618e72304d013c8dd5e604a6 , < 12a82819b0cada6e304790b1097f8f9006eb6123 (git)
Affected: 8961987f3f5fa2f2618e72304d013c8dd5e604a6 , < d0795cfd6f655f4de84868a4f4bb41a03f037b3d (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.1.189 , ≤ 6.1.* (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_codec.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8",
              "status": "affected",
              "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "versionType": "git"
            },
            {
              "lessThan": "a6da782fefae611e68a1aa79644065fc8ca5abcd",
              "status": "affected",
              "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "versionType": "git"
            },
            {
              "lessThan": "e4cfd3c4299105237458b27958bd7b0aa4c60795",
              "status": "affected",
              "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "versionType": "git"
            },
            {
              "lessThan": "f49a543d76d48f184b34225d9c0e2fc4cbdea8ec",
              "status": "affected",
              "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "versionType": "git"
            },
            {
              "lessThan": "12a82819b0cada6e304790b1097f8f9006eb6123",
              "status": "affected",
              "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "versionType": "git"
            },
            {
              "lessThan": "d0795cfd6f655f4de84868a4f4bb41a03f037b3d",
              "status": "affected",
              "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_codec.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.54",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.8",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc4",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_codec: validate vendor codec count length\n\nThe Read Local Supported Codecs parsers consume the variable-sized\nstandard codec array before parsing the vendor codec count.  Although the\ninitial reply-size check includes a vendor count byte in the fixed layout,\nit does not guarantee that the byte remains after the standard codec array.\n\nIf a controller reply ends immediately after that array, calculating the\nvendor codec array size reads vnd_codecs-\u003enum beyond the skb data.  Use\nskb_pull_data() to validate and consume each codec header before using its\ncount in both command variants."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:45:16.048Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8"
        },
        {
          "url": "https://git.kernel.org/stable/c/a6da782fefae611e68a1aa79644065fc8ca5abcd"
        },
        {
          "url": "https://git.kernel.org/stable/c/e4cfd3c4299105237458b27958bd7b0aa4c60795"
        },
        {
          "url": "https://git.kernel.org/stable/c/f49a543d76d48f184b34225d9c0e2fc4cbdea8ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/12a82819b0cada6e304790b1097f8f9006eb6123"
        },
        {
          "url": "https://git.kernel.org/stable/c/d0795cfd6f655f4de84868a4f4bb41a03f037b3d"
        }
      ],
      "title": "Bluetooth: hci_codec: validate vendor codec count length",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98247",
    "datePublished": "2026-10-06T08:45:16.048Z",
    "dateReserved": "2026-09-25T10:25:14.330Z",
    "dateUpdated": "2026-10-06T08:45:16.048Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-98247",
      "date": "2026-10-09",
      "epss": "0.00205",
      "percentile": "0.0969"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "net/bluetooth/hci_codec.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8",
                    "status": "affected",
                    "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "a6da782fefae611e68a1aa79644065fc8ca5abcd",
                    "status": "affected",
                    "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "e4cfd3c4299105237458b27958bd7b0aa4c60795",
                    "status": "affected",
                    "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "f49a543d76d48f184b34225d9c0e2fc4cbdea8ec",
                    "status": "affected",
                    "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "12a82819b0cada6e304790b1097f8f9006eb6123",
                    "status": "affected",
                    "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "d0795cfd6f655f4de84868a4f4bb41a03f037b3d",
                    "status": "affected",
                    "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "net/bluetooth/hci_codec.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.16"
                  },
                  {
                    "lessThan": "5.16",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.189",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.158",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.112",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.54",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.8",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.3-rc4",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_codec: validate vendor codec count length\n\nThe Read Local Supported Codecs parsers consume the variable-sized\nstandard codec array before parsing the vendor codec count.  Although the\ninitial reply-size check includes a vendor count byte in the fixed layout,\nit does not guarantee that the byte remains after the standard codec array.\n\nIf a controller reply ends immediately after that array, calculating the\nvendor codec array size reads vnd_codecs-\u003enum beyond the skb data.  Use\nskb_pull_data() to validate and consume each codec header before using its\ncount in both command variants."
          }
        ],
        "id": "CVE-2026-98247",
        "lastModified": "2026-10-06T09:18:12.940",
        "metrics": {},
        "published": "2026-10-06T09:18:12.940",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/12a82819b0cada6e304790b1097f8f9006eb6123"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a6da782fefae611e68a1aa79644065fc8ca5abcd"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/d0795cfd6f655f4de84868a4f4bb41a03f037b3d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e4cfd3c4299105237458b27958bd7b0aa4c60795"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f49a543d76d48f184b34225d9c0e2fc4cbdea8ec"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-10-08T16:49:18Z",
      "cve": "CVE-2026-98247",
      "id": "CVE-2026-98247",
      "initial_release_date": "2026-10-08T16:49:18Z",
      "product_status:known_affected": "62",
      "product_status:known_not_affected": "285",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98247",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98247.json",
      "version": "2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.