Bug#702610: /usr/bin/debdiff: debdiff: fatal error at line 1021: Cannot write /tmp/<random_chars>/control: Permission denied

[Bob Bib]

Package: devscripts
Version: 2.12.6
Severity: normal
File: /usr/bin/debdiff

Dear Maintainer,

debdiff fails to process some 3rd-party DEBs:

$ debdiff AdbeRdr9.5.3-1_i386linux_enu.deb AdbeRdr9.5.4-1_i386linux_enu.deb >
diff01.diff
debdiff: fatal error at line 1021:
Cannot write /tmp/lNEZ0MYwIL/control: Permission denied

(debdiff executed with sudo finishes without errors, but it seems to be a bad
practice).

Those "bad" DEB packages can be found there:
ftp://ftp.adobe.com/pub/adobe/reader/unix/9.x/9.5.3/enu/AdbeRdr9.5.3-1_i386linux_enu.deb
ftp://ftp.adobe.com/pub/adobe/reader/unix/9.x/9.5.4/enu/AdbeRdr9.5.4-1_i386linux_enu.deb



-- Package-specific info:

--- /etc/devscripts.conf ---

--- ~/.devscripts ---
Not present

-- System Information:
Debian Release: 7.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.2.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages devscripts depends on:
ii  dpkg-dev  1.16.9
ii  libc6     2.13-38
ii  perl      5.14.2-18
ii  python    2.7.3-4

Versions of packages devscripts recommends:
ii  at                        3.1.13-2
ii  curl                      7.26.0-1+wheezy1
ii  dctrl-tools               2.22.2
ii  debian-keyring            2012.11.15
ii  dput                      0.9.6.3+nmu1
ii  equivs                    2.0.9
ii  fakeroot                  1.18.4-2
ii  gnupg                     1.4.12-7
ii  libcrypt-ssleay-perl      0.58-1
ii  libdistro-info-perl       0.10
ii  libjson-perl              2.53-1
ii  libparse-debcontrol-perl  2.005-3
ii  libsoap-lite-perl         0.714-1
ii  liburi-perl               1.60-1
ii  libwww-perl               6.04-1
ii  lintian                   2.5.10.4
ii  man-db                    2.6.2-1
ii  patch                     2.6.1-3
ii  patchutils                0.3.2-1.1
ii  python-debian             0.1.21
ii  python-magic              5.11-2
ii  sensible-utils            0.0.7
ii  strace                    4.5.20-2.3
ii  unzip                     6.0-8
ii  wdiff                     1.1.2-1
ii  wget                      1.13.4-3
ii  xz-utils                  5.1.1alpha+20120614-2

Versions of packages devscripts suggests:
ii  bsd-mailx [mailx]            8.1.2-0.20111106cvs-1
ii  build-essential              11.5
pn  cvs-buildpackage             <none>
pn  devscripts-el                <none>
ii  gnuplot                      4.6.0-8
pn  libauthen-sasl-perl          <none>
ii  libfile-desktopentry-perl    0.04-3
pn  libnet-smtp-ssl-perl         <none>
pn  libterm-size-perl            <none>
ii  libtimedate-perl             1.2000-1
pn  libyaml-syck-perl            <none>
ii  mutt                         1.5.21-6.2
ii  openssh-client [ssh-client]  1:6.0p1-4
pn  svn-buildpackage             <none>
ii  w3m                          0.5.3-8

-- no debconf information