ntb：ntb_hw_switchtec：修复由于竞争条件导致的 switchtec_ntb_remove 中的释放后使用漏洞（CVE-2024-50059）
CVE编号
CVE-2024-50059利用情况
暂无补丁情况
N/A披露时间
2024-10-22漏洞描述
In the Linux kernel, the following vulnerability has been resolved: ntb: ntb_hw_switchtec: Fix use after free vulnerability in switchtec_ntb_remove due to race condition In the switchtec_ntb_add function, it can call switchtec_ntb_init_sndev function, then &sndev->check_link_status_work is bound with check_link_status_work. switchtec_ntb_link_notification may be called to start the work. If we remove the module which will call switchtec_ntb_remove to make cleanup, it will free sndev through kfree(sndev), while the work mentioned above will be used. The sequence of operations that may lead to a UAF bug is as follows: CPU0 CPU1 | check_link_status_work switchtec_ntb_remove| kfree(sndev); | | if (sndev->link_force_down) | // use sndev Fix it by ensuring that the work is canceled before proceeding with the cleanup in switchtec_ntb_remove.解决建议
建议您更新当前系统或软件至最新版，完成漏洞的修复。受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * | Up to (excluding) 5.10.227 | |||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * | From (including) 5.11 | Up to (excluding) 5.15.168 | ||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * | From (including) 5.16 | Up to (excluding) 6.1.113 | ||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * | From (including) 6.2 | Up to (excluding) 6.6.57 | ||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * | From (including) 6.7 | Up to (excluding) 6.11.4 | ||||
- 攻击路径 本地
- 攻击复杂度 高
- 权限要求 低
- 影响范围 未更改
- 用户交互 无
- 可用性 高
- 保密性 高
- 完整性 高
| CWE-ID | 漏洞类型 |
| CWE-416 | 释放后使用 |
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