CVE编号
CVE-2021-35477利用情况
暂无补丁情况
官方补丁披露时间
2021-08-02漏洞描述
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.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。
参考链接 |
|
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=... | |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=... | |
| https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://www.openwall.com/lists/oss-security/2021/08/01/3 |
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 | linux | * |
Up to (excluding) 4.14.241-184.433.amzn2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | linux | * |
Up to (excluding) 4.19.208-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | linux | * |
Up to (excluding) 5.10.46-3 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | linux | * |
Up to (excluding) 4.9.228-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedoraproject | fedora | 34 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | linux | * |
Up to (excluding) 5.13.8-100.fc33 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | linux | * |
Up to (excluding) 5.13.8-200.fc34 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * |
Up to (including) 5.13.7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | linux | * |
Up to (excluding) 5.3.18-lp152.92.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | linux | * |
Up to (excluding) 5.3.18-38.22.2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | linux | * |
Up to (excluding) 4.12.14-122.88.1 |
|||||
- 攻击路径 远程
- 攻击复杂度 容易
- 权限要求 无需权限
- 影响范围 有限影响
- 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 传输被破坏
- 服务器危害 DoS
- 全网数量 N/A
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