CVE-2026-98247

Description

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

• https://git.kernel.org/stable/c/12a82819b0cada6e304790b1097f8f9006eb6123
• https://git.kernel.org/stable/c/9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8
• https://git.kernel.org/stable/c/a6da782fefae611e68a1aa79644065fc8ca5abcd
• https://git.kernel.org/stable/c/d0795cfd6f655f4de84868a4f4bb41a03f037b3d
• https://git.kernel.org/stable/c/e4cfd3c4299105237458b27958bd7b0aa4c60795