[Bug 1631504] [NEW] loadkeys segfaults with certain arguments in 16.10

[Jason Conti]

Public bug reported:

This can be reproduced as follows:

1) Switch to VT 1 (ctrl+alt+f1)
2) run: loadkeys garbage
3) loadkeys will segfault

The problem appears to be with the implicit declaration of xmalloc in loadkeys.c. It is resolved if
#include "xmalloc.h" is added to the top of that file (and in fact all the other source files in kbd that reference xmalloc include that file).

Interestingly xmalloc is resolved without include but the returned
pointer seems to get truncated. It doesn't do this if the source is
built with gcc 5.4 in 16.04 so maybe it has something to do with gcc 6.2
in 16.10.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: kbd 2.0.3-2ubuntu2
ProcVersionSignature: Ubuntu 4.8.0-19.21-generic 4.8.0-rc8
Uname: Linux 4.8.0-19-generic x86_64
ApportVersion: 2.20.3-0ubuntu7
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Oct  7 15:27:58 2016
InstallationDate: Installed on 2016-10-06 (1 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20161006)
SourcePackage: kbd
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: kbd (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug yakkety

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to kbd in Ubuntu.
https://bugs.launchpad.net/bugs/1631504

Title:
  loadkeys segfaults with certain arguments in 16.10

Status in kbd package in Ubuntu:
  New

Bug description:
  This can be reproduced as follows:

  1) Switch to VT 1 (ctrl+alt+f1)
  2) run: loadkeys garbage
  3) loadkeys will segfault

  The problem appears to be with the implicit declaration of xmalloc in loadkeys.c. It is resolved if
  #include "xmalloc.h" is added to the top of that file (and in fact all the other source files in kbd that reference xmalloc include that file).

  Interestingly xmalloc is resolved without include but the returned
  pointer seems to get truncated. It doesn't do this if the source is
  built with gcc 5.4 in 16.04 so maybe it has something to do with gcc
  6.2 in 16.10.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: kbd 2.0.3-2ubuntu2
  ProcVersionSignature: Ubuntu 4.8.0-19.21-generic 4.8.0-rc8
  Uname: Linux 4.8.0-19-generic x86_64
  ApportVersion: 2.20.3-0ubuntu7
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Oct  7 15:27:58 2016
  InstallationDate: Installed on 2016-10-06 (1 days ago)
  InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20161006)
  SourcePackage: kbd
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/kbd/+bug/1631504/+subscriptions