CVE-2026-12233— zephyrproject zephyr 资源管理错误漏洞
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。
zephyrproject zephyr是zephyrproject组织开源的一个面向物联网设备的实时操作系统。 zephyrproject zephyr 3.2.0版本至4.4.2之前版本存在资源管理错误漏洞，该漏洞源于subsys/net/lib/tls_credentials/tls_credentials_trusted.c文件中的credential_lock互斥锁未正确初始化，当并发执行上下文争用该锁时，可能导致内核崩溃或设备重置，造成拒绝服务。
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| zephyrproject | zephyr | 3.2.0< 4.4.2 |
affected |
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一、 漏洞 CVE-2026-12233 基础信息
漏洞信息
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Vulnerability Title
Uninitialized mutex in TLS trusted-credential backend causes kernel NULL-deref DoS under contention
来源: CVE Program / CVE List V5
Vulnerability Description
The PSA Protected Storage credential backend (subsys/net/lib/tls_credentials/tls_credentials_trusted.c) declared its credential-store mutex as a plain zero-filled static struct k_mutex credential_lock; and never called k_mutex_init() on it. A statically zero-filled k_mutex has an uninitialized wait queue (its dlist head/tail are NULL instead of the self-referential sentinels that k_mutex_init/K_MUTEX_DEFINE install). The uncontended lock path does not touch the wait queue, so the defect is latent and serialized use behaves correctly.
When two execution contexts contend on the lock, k_mutex_lock() pends the blocking thread on the wait queue via z_pend_curr(), which calls sys_dlist_append() on the zeroed list and dereferences a NULL tail pointer (tail->next = node), faulting the kernel. The lock is held during TLS handshake credential loading and by all credential add/get/delete operations, so a deployment performing concurrent TLS handshakes (for example a server handling multiple simultaneous connections from a remote peer) or a credential-management operation concurrent with a handshake can trigger the dereference.
The impact is a denial of service: a deterministic kernel panic / device reset on the first contention. There is no memory corruption beyond the NULL dereference and no confidentiality or integrity impact; mutual exclusion on the fast path remains correct. Exposure is limited to builds with CONFIG_TLS_CREDENTIALS_BACKEND_PROTECTED_STORAGE enabled (PSA Protected Storage / TF-M platforms); the default volatile RAM backend initializes its lock correctly and is unaffected.
The fix initializes the mutex statically with K_MUTEX_DEFINE(credential_lock), providing a valid wait queue so the contended path no longer touches a NULL list.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
初始化不恰当
来源: CVE Program / CVE List V5
Vulnerability Title
zephyrproject zephyr 资源管理错误漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
zephyrproject zephyr是zephyrproject组织开源的一个面向物联网设备的实时操作系统。 zephyrproject zephyr 3.2.0版本至4.4.2之前版本存在资源管理错误漏洞，该漏洞源于subsys/net/lib/tls_credentials/tls_credentials_trusted.c文件中的credential_lock互斥锁未正确初始化，当并发执行上下文争用该锁时，可能导致内核崩溃或设备重置，造成拒绝服务。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| zephyrproject | zephyr | 3.2.0 ~ 4.4.2 | - |
|
二、漏洞 CVE-2026-12233 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-12233 补丁与修复 (1)
CVE-2026-12233 厂商安全公告 (1)
同批安全公告 · zephyrproject · 2026-08-12 · 共 4 条
| CVE-2026-12234 | 7.8 HIGH | zephyrproject zephyr 竞争条件问题漏洞 |
| CVE-2026-12235 | 6.3 MEDIUM | zephyrproject zephyr 缓冲区错误漏洞 |
| CVE-2026-12232 | 6.1 MEDIUM | zephyrproject zephyr 缓冲区错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-12233
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