CVE-2026-10641

[CVE catalog]

Zephyr's Bluetooth Classic Hands-Free Profile (HFP) Hands-Free role parser (subsys/bluetooth/host/classic/hfp_hf.c) contains an out-of-bounds write. During Service Level Connection setup the HF sends AT+CIND=? and parses the AG's +CIND: response in cind_handle(), which assigns a per-entry counter index and calls cind_handle_values() for each list element. cind_handle_values() then wrote hf->ind_table[index] = i without verifying that index is within the 20-element int8_t ind_table[] array of struct bt_hfp_hf. Because the parser places no cap on the number of +CIND: list entries, a remote Attendant Gateway (a malicious, compromised, or spoofed peer the device connects to over Bluetooth) can send a response with more than 20 recognized indicator entries and drive index arbitrarily large, writing a small attacker-positioned value past the array into adjacent struct fields (feature masks, SDP/version state, the calls[] array, work/atomic bookkeeping) and potentially beyond the static connection pool slot. This yields memory corruption and at least denial of service of the Bluetooth host, triggered by a single malformed AT response with no user interaction. The sibling consumer ag_indicator_handle_values() already performed the equivalent bounds check; this commit adds the same index >= ARRAY_SIZE(hf->ind_table) guard to close the gap. Affects builds with CONFIG_BT_HFP_HF enabled; introduced with the original HFP HF CIND parser (~v1.7) and present through v4.4.0.

Severity

High · CVSS 7.1CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Published

Jun 17, 2026, 1:14:06 PM UTC

Source

[NVD] · [CVE record]

EPSS

0.28% · Oct 27, 2026

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  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "zephyr",
      "ecosystem": "cpe",
      "fixed_version": "3.7.3"
    },
    {
      "name": "zephyr",
      "ecosystem": "cpe",
      "fixed_version": "4.3.1"
    },
    {
      "name": "zephyr",
      "ecosystem": "cpe",
      "fixed_version": "4.4.2"
    },
    {
      "name": "zephyr",
      "ranges": [
        {
          "fixed": "4.4.2",
          "introduced": "4.4.0",
          "last_affected": "",
          "start_excluding": ""
        }
      ],
      "ecosystem": "cpe",
      "fixed_version": "4.4.2",
      "provider_record_id": "NVD-CVE-2026-10641"
    }
  ]
}