[Bug 2071891] [NEW] tcpdump segv if -Z and -w is specified

Launchpad Bug Tracker 2071891 at bugs.launchpad.net
Wed Sep 10 15:38:25 UTC 2025


You have been subscribed to a public bug by Ghadi Rahme (ghadi-rahme):

Reproduce:

As root (sudo sh) do:

# tcpdump -Z root -ni lo -w /tmp/lo.pcap
Segmentation fault (core dumped)

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: tcpdump 4.99.4-3ubuntu4
ProcVersionSignature: Ubuntu 6.8.0-36.36-generic 6.8.4
Uname: Linux 6.8.0-36-generic x86_64
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: XFCE
Date: Thu Jul  4 08:47:14 2024
InstallationDate: Installed on 2024-04-25 (69 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm
 XDG_RUNTIME_DIR=<set>
SourcePackage: tcpdump
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: tcpdump (Ubuntu)
     Importance: High
     Assignee: Wesley Hershberger (whershberger)
         Status: Fix Released

** Affects: tcpdump (Ubuntu Noble)
     Importance: Undecided
     Assignee: Ghadi Rahme (ghadi-rahme)
         Status: Confirmed

** Affects: tcpdump (Ubuntu Oracular)
     Importance: Undecided
         Status: Won't Fix

** Affects: tcpdump (Ubuntu Plucky)
     Importance: Undecided
     Assignee: Ghadi Rahme (ghadi-rahme)
         Status: Confirmed

** Affects: tcpdump (Ubuntu Questing)
     Importance: High
     Assignee: Wesley Hershberger (whershberger)
         Status: Fix Released

** Affects: tcpdump (Debian)
     Importance: Unknown
         Status: Fix Released


** Tags: amd64 apport-bug noble
-- 
tcpdump segv if -Z and -w is specified
https://bugs.launchpad.net/bugs/2071891
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