CVE-2023-1206
MEDIUM 5.7EPSS 0.6%
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%.
- Affected
- Kernel
- CVSS v3.1 NVD
- 5.7 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.63% chance of exploitation in the next 30 days, 49th percentile
- Published
- 2023-06-30
- Updated
- 2026-10-14
Proof-of-concept exploits (1)
- SpiralBL0CK/CVE-2023-1206-CVE-2025-40040-CVE-2024-4988212★ · 2025-12-02