CVE-2026-19576— Goodix GT911 触摸屏控制器驱动栈外写入漏洞
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： Goodix GT9xx 输入驱动程序（位于 ）从控制器的状态寄存器读取触控点计数，并使用 （0x0F）进行掩码处理，从而得到一个 0..15 范围内的值。在 函数中，该值被直接用作填充 数组的循环上限。 是一个栈上数组，其大小由 定义，该 Kconfig 配置项的范围为 1..5，默认值为 1。除了依赖一条注释（声称控制器在初始化时被编程为报告不超过配置数量的触控点）外，没有其他检查来约束此计数。 每次循环迭代都会通过 I2C 读取八个字节，直接写入 。因此，如果控制器报告的触
影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| zephyrproject | zephyr | 4.0.0≤ 4.4.2 |
affected |
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一、 漏洞 CVE-2026-19576 基础信息
漏洞信息
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Vulnerability Title
Stack out-of-bounds write in the Goodix GT911 touch controller driver from an unvalidated device-reported touch point count
来源: CVE Program / CVE List V5
Vulnerability Description
The Goodix GT9xx input driver in drivers/input/input_gt911.c reads the touch point count from the controller's status register and masks it with GT911_TOUCH_POINTS_MSK (0x0F), yielding a value of 0..15. In gt911_process() that value is used directly as the loop bound for filling point_reg[], a stack array sized to CONFIG_INPUT_GT911_MAX_TOUCH_POINTS, whose Kconfig range is 1..5 with a default of 1. No other check constrains the count; the driver relied only on a comment asserting that the controller had been programmed at init to report no more points than configured.
Each loop iteration issues an I2C read of eight bytes straight into point_reg[i], so a controller that reports more points than the array holds causes up to 112 bytes of peer-supplied data to be written past the end of the array, over the stack frame of gt911_process() in the system workqueue thread. Two further loops then read out of bounds from the same array. Triggering it requires control of, or the ability to substitute, the I2C touch controller — plausible on the many supported boards where the GT9xx panel is a pluggable display module or shield rather than an on-PCB part; a spoofed device need only answer the init probes with a supported product ID and a checksum-valid config blob. The same overflow can also occur non-adversarially, with a GT9271-class panel that ignores the driver's touch-count programming and reports up to ten points, or with bus corruption of the single status byte.
The impact is an out-of-bounds stack write with fully attacker-chosen content executing at kernel privilege, i.e. potential control-flow hijack on the host MCU, in addition to out-of-bounds reads and crashes. The attack vector is physical/local hardware access only; there is no network, USB, or syscall path to the defect. The fix clamps the reported count with min() against CONFIG_INPUT_GT911_MAX_TOUCH_POINTS before any array indexing.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
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 | 4.0.0 ~ 4.4.2 | - |
|
二、漏洞 CVE-2026-19576 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-19576 补丁与修复 (1)
CVE-2026-19576 厂商安全公告 (1)
同批安全公告 · zephyrproject · 2026-10-11 · 共 11 条
| CVE-2026-19736 | 7.8 HIGH | NXP MCUX TRNG熵驱动越界写入漏洞 |
| CVE-2026-19669 | 7.8 HIGH | 燃料计量系统调用验证器无界变长数组导致内核栈溢出 |
| CVE-2026-19935 | 7.5 HIGH | Zephyr蓝牙协议栈L2CAP通道使用后释放漏洞 |
| CVE-2026-19577 | 7.1 HIGH | IPv6路由转发中越界读取漏洞 |
| CVE-2026-19740 | 6.5 MEDIUM | 蓝牙LE控制器：PHY更新过程中的RX节点泄露和可达断言漏洞 |
| CVE-2026-19738 | 6.5 MEDIUM | 蓝牙控制器CIS创建过程中保留RX节点泄漏及可达断言漏洞 |
| CVE-2026-19739 | 6.5 MEDIUM | 蓝牙LE控制器连接更新时意外LL控制PDU导致内存泄漏 |
| CVE-2026-19737 | 5.5 MEDIUM | ESP32 I2S驱动空指针解引用漏洞 |
| CVE-2026-19735 | 4.8 MEDIUM | Zephyr TCP栈可预测TCP初始序列号漏洞 |
| CVE-2026-18418 | 3.4 LOW | zbus 代理代理越界读取漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-19576
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