GHSA-W49G-PFQV-M398
Vulnerability from github – Published: 2026-10-06 09:31 – Updated: 2026-10-06 09:31In 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.
{
"affected": [],
"aliases": [
"CVE-2026-98247"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-06T09:18:12Z",
"severity": null
},
"details": "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": "GHSA-w49g-pfqv-m398",
"modified": "2026-10-06T09:31:32Z",
"published": "2026-10-06T09:31:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98247"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/12a82819b0cada6e304790b1097f8f9006eb6123"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a6da782fefae611e68a1aa79644065fc8ca5abcd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d0795cfd6f655f4de84868a4f4bb41a03f037b3d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e4cfd3c4299105237458b27958bd7b0aa4c60795"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f49a543d76d48f184b34225d9c0e2fc4cbdea8ec"
}
],
"schema_version": "1.4.0",
"severity": []
}
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