Linux：零长度传输片段的 netback 处理 (CVE-2023-46838)
CVE编号
CVE-2023-46838利用情况
暂无补丁情况
N/A披露时间
2024-01-29漏洞描述
Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides a certain initial portion of the to be transferred data, these parts are directly translated into what Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of length zero, lead to a de-reference of NULL in core networking code.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://xenbits.xenproject.org/xsa/advisory-448.html |
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 | alpine_3.16 | linux-lts | * | Up to (excluding) 5.15.147-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | linux-lts | * | Up to (excluding) 5.15.147-r1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | linux-lts | * | Up to (excluding) 6.1.74-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_38 | kernel | * | Up to (excluding) 6.6.14-100.fc38 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_39 | kernel | * | Up to (excluding) 6.6.14-200.fc39 | |||||
- 攻击路径 N/A
- 攻击复杂度 N/A
- 权限要求 N/A
- 影响范围 N/A
- 用户交互 N/A
- 可用性 N/A
- 保密性 N/A
- 完整性 N/A
| CWE-ID | 漏洞类型 |
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