中危 CVE-2022-4744 kernel: tun: avoid double free in tun_free_netdev
CVE编号
CVE-2022-4744利用情况
暂无补丁情况
官方补丁披露时间
2023-03-20漏洞描述
A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw allows a local user to crash or potentially escalate their privileges on the system.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 | amazon_2 | kernel | * | Up to (excluding) 5.4.241-150.347.amzn2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_23 | kernel | * | Up to (excluding) 5.10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | kernel | * | Up to (excluding) 5.10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | linux | * | Up to (excluding) 4.19.282-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | linux | * | Up to (excluding) 5.10.136-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | linux | * | Up to (excluding) 5.15.15-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | linux | * | Up to (excluding) 5.15.15-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP1 | kernel | * | Up to (excluding) 4.19.90-23.35.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP2 | kernel | * | Up to (excluding) 4.19.90-25.27.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP1 | kernel | * | Up to (excluding) 4.19.90-23.35.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP2 | kernel | * | Up to (excluding) 4.19.90-25.27.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | 5.16 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_5.3 | kernel | * | Up to (excluding) 5.14.21-150400.24.60.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.4 | dtb-al | * | Up to (excluding) 5.14.21-150400.24.60.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.5 | kernel | * | Up to (excluding) 5.14.21-150500.55.7.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_9 | kernel | * | Up to (excluding) 5.14.0-162.22.2.el9_1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_9 | kpatch-patch | * | Up to (excluding) 5.14.0-162.22.2.el9_1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_a | kernel | * | Up to (excluding) 4.19.0-91.82.144.uelc20 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_c | kernel | * | Up to (excluding) 4.19.0-91.77.144.uelc20 | |||||
- 攻击路径 本地
- 攻击复杂度 复杂
- 权限要求 普通权限
- 影响范围 越权影响
- EXP成熟度 未验证
- 补丁情况 官方补丁
- 数据保密性 数据泄露
- 数据完整性 无影响
- 服务器危害 无影响
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-415 | 双重释放 |
| CWE-460 | 抛出异常的清理不恰当 |
| CWE-824 | 使用未经初始化的指针 |
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