Updated: 2025-08-20 00:45:19.555394
Description:
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%.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0.0 | |
| CVSS Version 3.x | MEDIUM | 5.7 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 5.7 | MEDIUM | Released | CLSA-2025:1743193221 | 2024-06-24 11:28:12 | |
| CentOS 6 ELS | kernel | 2.6.32 | 5.7 | MEDIUM | Ignored | 2023-07-13 05:04:46 | Ignored due to low severity | |
| CentOS 7 ELS | kernel | 3.10.0 | 5.7 | MEDIUM | Ignored | 2023-09-19 05:07:19 | Ignored due to low severity | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 5.7 | MEDIUM | Ignored | 2024-06-24 11:35:13 | Ignored due to low severity | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 5.7 | MEDIUM | Ignored | 2024-06-24 11:35:13 | Ignored due to low severity | |
| CentOS Stream 8 ELS | kernel | 4.18.0 | 5.7 | MEDIUM | Ignored | 2024-06-24 11:20:05 | Ignored due to low severity | |
| CloudLinux 6 ELS | kernel | 2.6.32 | 5.7 | MEDIUM | Ignored | 2023-07-13 05:04:46 | Ignored due to low severity | |
| CloudLinux 7 ELS | kernel | 3.10.0 | 5.7 | MEDIUM | Ignored | 2024-10-03 10:52:00 | Ignored due to low severity | |
| Oracle Linux 6 ELS | kernel | 2.6.32 | 5.7 | MEDIUM | Ignored | 2023-07-13 09:09:17 | Ignored due to low severity | |
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 5.7 | MEDIUM | Released | CLSA-2023:1697745029 | 2023-10-19 21:11:13 |