This bug was fixed in the package wget - 1.17.1-1ubuntu1.2
---------------
wget (1.17.1-1ubuntu1.2) xenial-proposed; urgency=medium
* debian/patches/Sanitize-value-sent-to-memset-to-prevent-SEGFAULT.patch
upstream commited 7099f489 patch to fix segmentation fault (LP: #1573307)
-- Chen-Han Hsiao (Stanley) <stanley.hs...@canonical.com> Fri, 24 Feb
2017 12:24:53 -0800
** Changed in: wget (Ubuntu Xenial)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1573307
Title:
wget crashed with SIGSEGV in __memset_avx2()
Status in wget package in Ubuntu:
Fix Released
Status in wget source package in Xenial:
Fix Released
Bug description:
[Impact]
* wget will crash while displaying progress bar under narrow terminal
* Upstream already has fixed this issue in commit 7099f489 and 7cb9efa6
Steps to reproduce:
1. execute "wget
http://old-releases.ubuntu.com/releases/16.04.0/ubuntu-16.04-desktop-amd64.manifest";
under a narrow terminal (such as width less than 40 characters)
Problems:
1. The wget crash with segmentation fault
Expected behavior:
1. wget will not crash
[Test Case]
After upgrading to the new version, the repeating the above steps should
give expected behavior.
[Regression Potential]
Potential of causing regression is relatively small for a two line change
for assertion check
[Other Info]
EDIT(other user): The crash actually happens when the terminal window
is too small.
When I try to download a big file with wget on Ubuntu 16.04 it crashes
after a couple seconds.
To reproduce the bug try the following:
wget http://releases.ubuntu.com/16.04/ubuntu-16.04-desktop-amd64.iso
I've asked another guy on IRC on channel #ubuntu-it to try and reproduce this
bug
and he said it was crashing also on his machine.
evan@HPPC:~$ lsb_release -rd
Description: Ubuntu 16.04 LTS
Release: 16.04
evan@HPPC:~$ apt-cache policy wget
wget:
Installato: 1.17.1-1ubuntu1
Candidato: 1.17.1-1ubuntu1
Tabella versione:
*** 1.17.1-1ubuntu1 500
500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
100 /var/lib/dpkg/status
ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: wget 1.17.1-1ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Apr 22 01:34:10 2016
ExecutablePath: /usr/bin/wget
InstallationDate: Installed on 2016-04-21 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64
(20160420.1)
ProcCmdline: wget
http://releases.ubuntu.com/16.04/ubuntu-16.04-desktop-amd64.iso
SegvAnalysis:
Segfault happened at: 0x7f4eac3b7328 <__memset_avx2+392>: rep stos
%al,%es:(%rdi)
PC (0x7f4eac3b7328) ok
source "%al" ok
destination "%es:(%rdi)" (0x562969134000) not located in a known VMA region
(needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: wget
StacktraceTop:
__memset_avx2 () at ../sysdeps/x86_64/multiarch/memset-avx2.S:161
?? ()
?? ()
?? ()
?? ()
Title: wget crashed with SIGSEGV in __memset_avx2()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
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