FKIE_CVE-2026-98247

Vulnerability from fkie_nvd - Published: 2026-10-06 09:18 - Updated: 2026-10-06 09:18
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/12a82819b0cada6e304790b1097f8f9006eb6123
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a6da782fefae611e68a1aa79644065fc8ca5abcd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d0795cfd6f655f4de84868a4f4bb41a03f037b3d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e4cfd3c4299105237458b27958bd7b0aa4c60795
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f49a543d76d48f184b34225d9c0e2fc4cbdea8ec
Impacted products
Vendor Product Version
To clipboard 

{
  "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"
}



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