中危 linux linux_kernel 使用共享资源的并发执行不恰当同步问题（竞争条件）
CVE编号
CVE-2021-3573利用情况
暂无补丁情况
没有补丁披露时间
2021-08-13漏洞描述
A use-after-free in function hci_sock_bound_ioctl() of the Linux kernel HCI subsystem was found in the way user calls ioct HCIUNBLOCKADDR or other way triggers race condition of the call hci_unregister_dev() together with one of the calls hci_sock_blacklist_add(), hci_sock_blacklist_del(), hci_get_conn_info(), hci_get_auth_info(). A privileged local user could use this flaw to crash the system or escalate their privileges on the system. This flaw affects the Linux kernel versions prior to 5.13-rc5.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) 5.4.129-62.227.amzn2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_7 | kernel | * | Up to (excluding) 3.10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | kernel | * | Up to (excluding) 4.19 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_7 | kernel | * | Up to (excluding) 3.10.0-1160.59.1.el7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | kernel | * | Up to (excluding) 4.18.0-348.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | linux | * | Up to (excluding) 4.19.194-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | linux | * | Up to (excluding) 5.10.46-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | linux | * | Up to (excluding) 5.10.46-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | linux | * | Up to (excluding) 4.9.272-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | linux | * | Up to (excluding) 5.10.46-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedoraproject | fedora | 34 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | kernel | * | Up to (excluding) 5.12.10-200.fc33 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | kernel | * | Up to (excluding) 5.12.10-300.fc34 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP2 | kernel | * | Up to (excluding) 4.19.90-25.11.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP2 | kernel | * | Up to (excluding) 4.19.90-25.11.v2101.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * | Up to (excluding) 5.13 | |||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | 5.13 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | kernel | * | Up to (excluding) 5.3.18-59.13.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_6 | kernel | * | Up to (excluding) 4.1.12-124.62.3.el6uek | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_7 | kernel | * | Up to (excluding) 4.14.35-2047.507.7.5.el7uek | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | kernel | * | Up to (excluding) 4.18.0-348.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat | enterprise_linux | 6.0 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat | enterprise_linux | 7.0 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat | enterprise_linux | 8.0 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_7 | kernel-rt | * | Up to (excluding) 3.10.0-1160.59.1.el7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | kernel | * | Up to (excluding) 4.18.0-348.el8 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | linux-hwe-5.4 | * | Up to (excluding) 5.4.0-1022.23~18.04.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04.5_lts | linux | * | Up to (excluding) 4.15.0-154.161 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | linux-bluefield | * | Up to (excluding) 5.11.0-1017.18~20.04.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | linux | * | Up to (excluding) 5.11.0-31.33 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_d | kernel | * | Up to (excluding) 4.19.90-5037 | |||||
- 攻击路径 本地
- 攻击复杂度 复杂
- 权限要求 无需权限
- 影响范围 越权影响
- EXP成熟度 N/A
- 补丁情况 没有补丁
- 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-362 | 使用共享资源的并发执行不恰当同步问题（竞争条件） |
| CWE-416 | 释放后使用 |
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