CVE-2026-13213— 蓝牙HAS：bonded对等体重连时的空指针解引用DoS漏洞
一分钟漏洞结论
影响对象
zephyrproject zephyr
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
以下是对该漏洞描述信息的中文翻译： 在 文件中，Hearing Access Service (HAS) GATT 服务器无条件地通过 安装了连接回调。这意味着，即使应用程序尚未调用 ，只要建立了安全性连接， 函数就会运行。在服务属性指针 、 和 被 解析并设置 标志之前，这些指针始终保持为 NULL（空指针）。 当启用 配置时， 会在系统启动时恢复每个已配对客户端的持久化上下文，并无条件地将 设置为 （非零值）。如果此前已配对的 peer 在 被调用之前的启动窗口期内重新连接并重新建立安全性， 函数会检测到非零标
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一、 漏洞 CVE-2026-13213 基础信息
漏洞信息
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Vulnerability Title
Bluetooth HAS: NULL-pointer dereference DoS when a bonded peer reconnects before bt_has_register
来源: CVE Program / CVE List V5
Vulnerability Description
The Hearing Access Service (HAS) GATT server in subsys/bluetooth/audio/has.c installs a connection-callback set unconditionally via BT_CONN_CB_DEFINE, so security_changed() runs for every connection that establishes security even before the application has called bt_has_register(). The service attribute pointers hearing_aid_features_attr, preset_control_point_attr, and active_preset_index_attr remain NULL until bt_has_register() resolves them and sets has.registered.
With CONFIG_BT_SETTINGS, settings_set_cb() restores each bonded client's persisted context at boot and unconditionally sets context->flags to BONDED_CLIENT_INIT_FLAGS (non-zero). When a previously bonded peer reconnects and re-establishes security during the startup window before bt_has_register() has been called, security_changed() sees the non-zero flags and schedules notify_work_handler, which calls bt_gatt_is_subscribed() with a still-NULL attribute pointer. That triggers an assertion (__ASSERT(attr, ...) in bt_gatt_is_subscribed()), or a NULL dereference of attr->uuid when assertions are compiled out.
The result is a remotely triggerable (Bluetooth, adjacent) crash of the HAS peripheral. Exploitation requires the peer to have previously bonded with the device and to reconnect within the boot-time race window before the application registers the service; a peer that reconnects persistently can prolong the outage. Impact is denial of service only, with no memory corruption or information disclosure.
The fix adds an early if (!has.registered) { return; } guard in security_changed(), so no notification work is scheduled until the GATT service is registered and its attribute pointers are valid.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| zephyrproject | zephyr | 3.6.0 ~ 4.4.2 | - |
|
二、漏洞 CVE-2026-13213 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-13213 其他参考 (2)
同批安全公告 · zephyrproject · 2026-08-24 · 共 4 条
| CVE-2026-13212 | 8.8 HIGH | Zephyr virtio 驱动使用越界描述符 ID 调用任意函数指针漏洞 |
| CVE-2026-9728 | 6.4 MEDIUM | mbox_send系统调用TOCTOU竞态导致内核内存泄露 |
| CVE-2026-13343 | 5.3 MEDIUM | MIDI 2.0 UMP 流响应者未初始化栈内存泄露漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-13213
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