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A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw al…

高危 CVSS 7.4
CVECVE-2021-20322
首次发现2026-07-30 16:30 UTC
披露时间2022-02-18 18:15 UTC
最后更新2026-07-30 16:30 UTC
通道状态auto

摘要

A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.

中文摘要建设中,暂以英文摘要呈现(DR-003 v2)。

深度研判 · 自动通道

该漏洞尚未生成深度研判报告(DR-003 v2 AI pipeline 建设中)。

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数据来源

  • NVD DATABASE

原始链接

时间线

  1. nvd_ingest NVD