中危 Linux 内核的 net/sched 中的释放后使用：sch_qfq 组件 (CVE-2023-4921)
CVE编号
CVE-2023-4921利用情况
暂无补丁情况
官方补丁披露时间
2023-09-12漏洞描述
A use-after-free vulnerability in the Linux kernels net/sched: sch_qfq component can be exploited to achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sending network packets triggers use-after-free in qfq_dequeue() due to the incorrect .peek handler of sch_plug and lack of error checking in agg_dequeue(). We recommend upgrading past commit 8fc134fee27f2263988ae38920bc03da416b03d8.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) 1.0-1.amzn2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2023 | kernel | * | Up to (excluding) 6.1.55-75.123-1.0-0.amzn2023 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_AMI | kernel | * | Up to (excluding) 4.14.326-171.539.amzn1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | linux | * | Up to (including) 4.19.249-2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | linux | * | Up to (excluding) 5.10.197-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | linux | * | Up to (excluding) 6.1.55-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | linux | * | Up to (excluding) 6.5.6-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * | From (including) 3.8 | Up to (excluding) 6.6 | ||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | kernel | * | Up to (excluding) 4.12.14-122.179.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | linux-bluefield | * | Up to (excluding) 5.15.0-1044.48~20.04.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.04 | linux-aws-6.2 | * | Up to (excluding) 5.15.0-1031.37 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_a | kernel | * | Up to (excluding) 4.19.0-91.82.152.13.uelc20 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_d | kernel | * | Up to (excluding) 4.19.90-5069 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_e | kernel | * | Up to (excluding) 4.19.90-2305.1.0.0199.66.uel20 | |||||
- 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 无影响
- 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-416 | 释放后使用 |
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