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A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.

🗓️ 11 Jul 2023 07:00:00Reported by MicrosoftType 
mscve
 mscve🔗 msrc.microsoft.com👁 1 Views

Hash collision in Linux kernel IPv6 lookup enables triggering SYN floods and up to ninety-five percent CPU usage.

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Vulners
Node
microsoftcbl2_kernel_5.15.126.1-1Range<5.15.126.1-1

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11 Jul 2023 07:00Current
7.3High risk
Vulners AI Score7.3
CVSS 3.15.7
EPSS0.0004
SSVC
hash collisionlinux kernelipv6 lookupsyn floodscpu usage
1