CVE编号
CVE-2021-26930利用情况
暂无补丁情况
官方补丁披露时间
2021-02-17漏洞描述
An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later processing, resulting in the caller assuming successful mapping, and hence subsequent operations trying to access space that wasn't mapped. In another case, internal state would be insufficiently updated, preventing safe recovery from the error. This affects drivers/block/xen-blkback/blkback.c.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 |
|
|---|---|
| http://xenbits.xen.org/xsa/advisory-365.html | |
| https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html | |
| https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://lists.fedoraproject.org/archives/list/[email protected]... | |
| https://security.netapp.com/advisory/ntap-20210326-0001/ |
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 linux_2 | linux | * |
Up to (excluding) 4.14.225-168.357-1.0-0.amzn2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | amazon linux_AMI | linux | * |
Up to (excluding) 4.14.225-121.357.amzn1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | linux | * |
Up to (excluding) 4.14.225-168.357.amzn2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_AMI | linux | * |
Up to (excluding) 4.14.225-121.357.amzn1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | linux | * |
Up to (excluding) 4.19.177-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | linux | * |
Up to (excluding) 5.10.13-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | linux | * |
Up to (excluding) 4.9.258-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | linux | * |
Up to (excluding) 5.10.13-1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedoraproject | fedora | 32 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedoraproject | fedora | 33 | - | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_32 | linux | * |
Up to (excluding) 5.10.18-100.fc32 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_33 | linux | * |
Up to (excluding) 5.10.18-200.fc33 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | linux | linux_kernel | * |
From (including) 3.11 |
Up to (including) 5.10.16 |
||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | linux | * |
Up to (excluding) 5.3.18-lp152.66.2 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle linux_6 | linux | * |
Up to (excluding) 4.1.12-124.48.5.el6uek |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle linux_7 | linux | * |
Up to (excluding) 4.14.35-2047.500.9.3.el7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle linux_8 | linux | * |
Up to (excluding) 5.4.17-2036.103.3.1.el8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_6 | linux | * |
Up to (excluding) 4.1.12-124.48.5.el7uek |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_7 | linux | * |
Up to (excluding) 4.14.35-2047.500.9.3.el7 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | linux | * |
Up to (excluding) 5.4.17-2036.103.3.1.el8 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | sles_12_SP5 | linux | * |
Up to (excluding) 4.12.14-16.50.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | linux | * |
Up to (excluding) 4.12.14-16.50.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_14.04 | linux | * |
Up to (excluding) 4.15.0-1114.127~14.04.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_14.04_lts | linux-aws | * |
Up to (excluding) 4.4.0-1090.94 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_16.04 | linux | * |
Up to (excluding) 4.15.0-1102.109~16.04.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | linux | * |
Up to (excluding) 4.15.0-1071.79 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04_lts | linux-hwe-5.4 | * |
Up to (excluding) 5.4.0-71.79~18.04.1 |
|||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | linux | * |
Up to (excluding) 5.4.0-1033.36 |
|||||
- 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 N/A
- 补丁情况 官方补丁
- 数据保密性 数据泄露
- 数据完整性 传输被破坏
- 服务器危害 服务器失陷
- 全网数量 N/A
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