CVE-2026-10678— zephyrproject zephyr 异常处理不当漏洞
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组织开源的一款实时操作系统内核。 zephyrproject Zephyr 4.3.0版本及之前版本存在安全漏洞，该漏洞源于MCTP-over-I2C+GPIO目标绑定(mctp_i2c_gpio_target.c)中的mctp_i2c_gpio_target_write_received()函数在接收缓冲区未分配时取消引用并写入，以及存在写后检查的边界测试，触发空指针写入和单字节堆溢出，可能导致内存损坏或拒绝服务。
影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| zephyrproject | zephyr | 4.3.0< 4.5.0 |
affected |
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一、 漏洞 CVE-2026-10678 基础信息
漏洞信息
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Vulnerability Title
NULL-pointer / out-of-bounds write in Zephyr MCTP I2C+GPIO target binding driven by an unauthenticated I2C controller
来源: CVE Program / CVE List V5
Vulnerability Description
The MCTP-over-I2C+GPIO target binding in Zephyr (subsys/pmci/mctp/mctp_i2c_gpio_target.c) processes pseudo-register writes from an I2C bus master byte-by-byte in mctp_i2c_gpio_target_write_received() without validating the order or the receive buffer. In the affected versions the MCTP_I2C_GPIO_RX_MSG_ADDR (data) handler dereferences and writes through b->rx_pkt without checking that the receive buffer was allocated: a controller that selects the data register and writes a byte without first sending the length register (which is what allocates the buffer) causes a write of an attacker-chosen byte through a NULL/unallocated mctp_pktbuf pointer (i.e. into a small attacker-advanceable offset above address 0), producing memory corruption or a hard fault.
The same handler also performs a write-then-check bounds test, allowing a one-byte heap overflow at data[255] when more than 255 data bytes are sent.
Because the I2C target callback is invoked with raw bytes supplied by whatever device is the bus master and the binding performs no authentication, a malicious or malfunctioning controller on the bus can trigger these without any prior protocol state, leading to memory corruption and/or denial of service on the target device.
The vulnerable code was introduced when the I2C+GPIO target binding was added and shipped in Zephyr v4.3.0 and v4.4.0. The fix defers allocation to the first data byte with a NULL check, treats a missing length as a zero-sized packet rejected by libmctp, and moves the bounds check before the store.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
来源: CVE Program / CVE List V5
Vulnerability Title
zephyrproject zephyr 异常处理不当漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
zephyrproject zephyr是zephyrproject组织开源的一款实时操作系统内核。 zephyrproject Zephyr 4.3.0版本及之前版本存在安全漏洞，该漏洞源于MCTP-over-I2C+GPIO目标绑定(mctp_i2c_gpio_target.c)中的mctp_i2c_gpio_target_write_received()函数在接收缓冲区未分配时取消引用并写入，以及存在写后检查的边界测试，触发空指针写入和单字节堆溢出，可能导致内存损坏或拒绝服务。
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 | 4.3.0 ~ 4.5.0 | - |
|
二、漏洞 CVE-2026-10678 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-10678 补丁与修复 (1)
CVE-2026-10678 厂商安全公告 (1)
同批安全公告 · zephyrproject · 2026-07-21 · 共 6 条
| CVE-2026-10680 | 7.6 HIGH | zephyrproject zephyr 缓冲区错误漏洞 |
| CVE-2026-10677 | 6.5 MEDIUM | zephyrproject zephyr 资源管理错误漏洞 |
| CVE-2026-10674 | 5.5 MEDIUM | zephyrproject zephyr 异常处理不当漏洞 |
| CVE-2026-10675 | 4.3 MEDIUM | zephyrproject zephyr 资源管理错误漏洞 |
| CVE-2026-10679 | 3.3 LOW | zephyrproject zephyr 数字错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-10678
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