The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.
The n_tty_write function in drivers/tty/n_tty.c in the Linux kernel through 3.14.3 does not properly manage tty driver access in the "LECHO & !OPOST" case, which allows local users to cause a denial of service (memory corruption and system crash) or gain privileges by triggering a race condition involving read and write operations with long strings.
为什么是这个 VPI(可解释·实验性)
VPI 计算依据
| 影响度 | 55.00 |
| 利用信号(KEV 收录) | ×1.50 |
| VPI | 82.50 |
VPI 公式 vpi-v1
必要措施
The impacted product is end-of-life and should be disconnected if still in use.
| 来源 | CVSS 版本 | 基础评分 | 严重程度 | 向量字符串 | 评估日期 |
|---|---|---|---|---|---|
| NVDNIST | 3.1 | 5.5 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | 2026. 04. 20. |
| NVDNIST | 2.0 | 6.9 |
| AV:L/AC:M/Au:N/C:C/I:C/A:C |
| 2026. 04. 20. |