中危 linux linux_kernel 在移除最后引用时对内存的释放不恰当（内存泄露）
CVE编号
CVE-2021-3764利用情况
暂无补丁情况
官方补丁披露时间
2022-08-24漏洞描述
A memory leak flaw was found in the Linux kernel's ccp_run_aes_gcm_cmd() function that allows an attacker to cause a denial of service. The vulnerability is similar to the older CVE-2019-18808. The highest threat from this vulnerability is to system availability.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) 4.14.252-207.481.amzn2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_7 | kernel | * | Up to (excluding) 4.19 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | kernel | * | Up to (excluding) 4.18 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | kernel | * | Up to (excluding) 4.18.0-372.9.1.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | linux | * | Up to (excluding) 4.19.232-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | linux | * | Up to (excluding) 5.10.84-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | linux | * | Up to (excluding) 5.14.12-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | linux-4.19 | * | Up to (excluding) 4.19.232-1~deb9u1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | linux | * | Up to (excluding) 5.14.12-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP1 | kernel | * | Up to (excluding) 4.19.90-23.18.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP1 | kernel | * | Up to (excluding) 4.19.90-23.18.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * | Up to (including) 5.14.20 | |||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | 5.15 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | kmod-compat | * | Up to (excluding) 5.3.18-lp152.95.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | kmod-compat | * | Up to (excluding) 5.3.18-59.27.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | kernel | * | Up to (excluding) 4.18.0-372.9.1.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | kernel | * | Up to (excluding) 4.18.0-372.9.1.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | kernel | * | Up to (excluding) 4.12.14-122.91.2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | linux-hwe-5.4 | * | Up to (excluding) 4.15.0-1116.123 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04.5_lts | linux | * | Up to (excluding) 4.15.0-163.171 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | linux-bluefield | * | Up to (excluding) 5.4.0-1064.67 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | linux | * | Up to (excluding) 5.11.0-41.45 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.10 | linux | * | Up to (excluding) 5.13.0-1007.8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_d | kernel | * | Up to (excluding) 4.19.90-5031 | |||||
- 攻击路径 本地
- 攻击复杂度 容易
- 权限要求 普通权限
- 影响范围 全局影响
- 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 服务器失陷
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-401 | 在移除最后引用时对内存的释放不恰当（内存泄露） |
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