Comment 0 for bug 2049318

nftables is being used successfully with no difficulty.

Running iptables on my node receives a crash:

$ sudo iptables -nL
free(): double free detected in tcache 2
Aborted (core dumped)

without sudo

# iptables -nL
free(): double free detected in tcache 2
Aborted (core dumped)

This bug is known and was fixed in version 1.8.8 of iptables https://git.netfilter.org/iptables/commit/?id=4318961230bce82958df82b57f1796143bf2f421

1) The release of Ubuntu

$ lsb_release -rd
Description: Ubuntu 22.04.3 LTS
Release: 22.04

2) The version of the package

$ apt info iptables
Package: iptables
Version: 1.8.7-1ubuntu5.1

3) What you expected to happen

not to crash with valid, working nftables rules

4) What happened instead

crash

A plausible workaround could be a backport of iptables 1.8.9 from mantic

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: iptables 1.8.7-1ubuntu5.1
ProcVersionSignature: Ubuntu 5.15.0-91.101-generic 5.15.131
Uname: Linux 5.15.0-91-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CloudArchitecture: x86_64
CloudID: none
CloudName: none
CloudPlatform: none
CloudSubPlatform: config
Date: Sun Jan 14 20:36:59 2024
InstallationDate: Installed on 2021-11-23 (782 days ago)
InstallationMedia: Ubuntu-Server 20.04.3 LTS "Focal Fossa" - Release amd64 (20210824)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: iptables
UpgradeStatus: Upgraded to jammy on 2023-04-30 (259 days ago)