CVE-2023-1206

Summary

CVE-2023-1206 is a newly discovered vulnerability affecting the Linux kernel's IPv6 functionality. This flaw, which involves a hash collision in the connection lookup table, can be exploited through a specific SYN flood attack. A malicious user, located in the local network or possessing a high-bandwidth connection, can trigger the issue, leading to an excessive increase in CPU usage on the targeted server, reaching up to 95%. The vulnerability poses a significant risk for servers that accept IPv6 connections and requires immediate attention from system administrators.

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