CVE-2026-12365— Zephyr Project 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。
Zephyr Project zephyr是Zephyr Project组织开源的一个面向物联网设备的实时操作系统。 Zephyr Project zephyr 2.6.0版本至4.5.0之前版本存在资源管理错误漏洞，该漏洞源于kernel/work.c中处理延迟工作超时时，并发取消未等待处理完成，导致释放后重用，可能造成内核内存损坏或崩溃（拒绝服务）。
可能的 ATT&CK 技术 1 AI
T1059 · Command and Scripting Interpreter影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| zephyrproject | zephyr | 2.6.0< 4.5.0 |
affected |
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一、 漏洞 CVE-2026-12365 基础信息
漏洞信息
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Vulnerability Title
Use-after-free in Zephyr delayable work-queue cancellation under SMP timing race
来源: CVE Program / CVE List V5
Vulnerability Description
A use-after-free exists in the Zephyr second-generation work queue (kernel/work.c) in the handling of delayable work timeouts. When a delayable work item's timeout has been dequeued and its handler work_timeout() is in flight (blocked acquiring the work-queue spinlock), a concurrent cancellation does not wait for that handler to finish. In unschedule_locked() the pre-fix code called z_abort_timeout(), which for an already-announcing record returns -EINVAL without removing it; cancel_async_locked() then observes the work as idle, so even k_work_cancel_delayable_sync() and k_work_flush_delayable() return without blocking on the in-flight handler.
Because those are the APIs the kernel header documents as the safe way to cancel before freeing a k_work_delayable, a caller that frees the object immediately after a successful sync cancel can race the still-pending handler. work_timeout() subsequently dereferences the freed record: it reads to->dticks via z_is_timeout_handler_canceled() and, if the freed slot has been reused so the bail check fails, performs a read-modify-write of wp->flags (K_WORK_DELAYED_BIT) and submits work against a stale dw->queue pointer — a use-after-free read and write.
The k_work API is kernel-mode only (no __syscall entry point), so this is a kernel-internal concurrency defect rather than a userspace privilege escalation. Triggering it requires an SMP build and a subsystem that schedules and then frees (or reschedules) a delayable work item in the narrow window while its timeout is announcing; an attacker able to influence the timing of such teardown (for example via connection churn driving subsystem timers) has a plausible but probabilistic path. The impact is kernel memory corruption or crash (denial of service).
The fix makes unschedule_locked() wait, by spinning on z_try_abort_timeout() returning -EAGAIN while releasing and re-acquiring the work spinlock, until any in-flight handler completes before returning, and switches work_timeout() to atomic K_WORK_DELAYED_BIT ownership. This closes both the free-then-handler use-after-free and the related reschedule early-fire race.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
释放后使用
来源: CVE Program / CVE List V5
Vulnerability Title
Zephyr Project 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
Zephyr Project zephyr是Zephyr Project组织开源的一个面向物联网设备的实时操作系统。 Zephyr Project zephyr 2.6.0版本至4.5.0之前版本存在资源管理错误漏洞，该漏洞源于kernel/work.c中处理延迟工作超时时，并发取消未等待处理完成，导致释放后重用，可能造成内核内存损坏或崩溃（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 | 2.6.0 ~ 4.5.0 | - |
|
二、漏洞 CVE-2026-12365 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-12365 补丁与修复 (1)
CVE-2026-12365 厂商安全公告 (1)
同批安全公告 · zephyrproject · 2026-08-14 · 共 4 条
| CVE-2026-12366 | 8.8 HIGH | Zephyr Project zephyr 资源管理错误漏洞 |
| CVE-2026-12364 | 8.4 HIGH | Zephyr Project zephyr 缓冲区错误漏洞 |
| CVE-2026-12363 | 4.2 MEDIUM | Zephyr Project zephyr 缓冲区错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-12365
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