| Name | CVE-2023-1206 |
| 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%. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-5480-1, DSA-5492-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | buster | 4.19.249-2 | vulnerable |
| buster (security) | 4.19.289-2 | vulnerable |
| bullseye | 5.10.178-3 | vulnerable |
| bullseye (security) | 5.10.191-1 | fixed |
| bookworm | 6.1.38-1 | vulnerable |
| bookworm (security) | 6.1.52-1 | fixed |
| trixie, sid | 6.5.3-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://bugzilla.redhat.com/show_bug.cgi?id=2175903
https://git.kernel.org/linus/d11b0df7ddf1831f3e170972f43186dad520bfcc (6.5-rc4)