[Pkg-gmagick-im-team] Bug#1079497: imagemagick-6.q16: Segfault on reverting "noise reduce" in display-im6

[Mikhail Kot]

Package: imagemagick-6.q16
Version: 8:6.9.13.12+dfsg1-1
Severity: normal
X-Debbugs-Cc: to-debian at myrrc.dev

Dear Maintainer,

I have found a bug in display-im6 viewer. Steps to reproduce:
1. Open an image in display-im6 (image attached, http://0x0.st/Xytz.jpg)
2. Apply "noise reduce" (I selected radius 100).
3. Undo

display-im6 crashed with "double free or corruption (!prev)", coredump attached
http://0x0.st/Xyti.core.zst

-- Package-specific info:
ImageMagick program version
---------------------------
animate:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org
compare:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org
convert:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org
composite:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org
conjure:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org
display:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org
identify:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org
import:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org
mogrify:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org
montage:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org
stream:  ImageMagick 6.9.13-12 Q16 x86_64 18420 https://legacy.imagemagick.org

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

Kernel: Linux 6.10.3-amd64 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages imagemagick-6.q16 depends on:
ii  hicolor-icon-theme        0.18-1
ii  libc6                     2.39-6
ii  libmagickcore-6.q16-7t64  8:6.9.13.12+dfsg1-1
ii  libmagickwand-6.q16-7t64  8:6.9.13.12+dfsg1-1

Versions of packages imagemagick-6.q16 recommends:
ii  ghostscript                  10.03.1~dfsg-2
pn  libmagickcore-6.q16-7-extra  <none>
pn  netpbm                       <none>

Versions of packages imagemagick-6.q16 suggests:
pn  autotrace               <none>
pn  cups-bsd | lpr | lprng  <none>
ii  curl                    8.9.1-2
pn  enscript                <none>
ii  ffmpeg                  7:7.0.2-3
pn  gimp                    <none>
pn  gnuplot                 <none>
pn  grads                   <none>
pn  graphviz                <none>
ii  groff-base              1.23.0-5
pn  hp2xx                   <none>
pn  html2ps                 <none>
pn  imagemagick-6-doc       <none>
pn  libraw-bin              <none>
pn  libwmf-bin              <none>
pn  mplayer                 <none>
pn  povray                  <none>
pn  radiance                <none>
pn  sane-utils              <none>
pn  texlive-base-bin        <none>
pn  transfig                <none>
ii  xdg-utils               1.1.3-4.1

-- no debconf information