Out-of-bounds write in ImageMagick - CVE-2026-56370
Published: April 14, 2026 / Updated: September 14, 2026
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds write in ConnectedComponentsImage() when processing an invalid index in CLI-controlled connected-components:* artifacts. A remote attacker can supply a specially crafted define value to cause a denial of service.
User interaction is required to process the crafted input.
Affected software
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
Debian Linux
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
Desktop Applications Module
Development Tools Module
openSUSE Leap
Ubuntu
Anolis OS
libmagickcore-6.q16hdri-6 (Ubuntu package)
libmagickwand-6.q16hdri-6 (Ubuntu package)
libmagickcore-6-headers (Ubuntu package)
imagemagick-6.q16 (Ubuntu package)
libmagickwand-6.q16-6 (Ubuntu package)
libimage-magick-q16-perl (Ubuntu package)
libmagickwand-dev (Ubuntu package)
libmagickcore-6.q16-6-extra (Ubuntu package)
imagemagick-6.q16hdri (Ubuntu package)
libmagickwand-6-headers (Ubuntu package)
libmagickcore-6.q16-dev (Ubuntu package)
libmagickcore-dev (Ubuntu package)
libmagickwand-6.q16hdri-dev (Ubuntu package)
libimage-magick-perl (Ubuntu package)
imagemagick-common (Ubuntu package)
libmagick++-6.q16hdri-8 (Ubuntu package)
imagemagick-doc (Ubuntu package)
libmagick++-6.q16-dev (Ubuntu package)
imagemagick-6-doc (Ubuntu package)
libmagick++-6.q16-8 (Ubuntu package)
libmagick++-dev (Ubuntu package)
libmagickcore-6.q16hdri-6-extra (Ubuntu package)
imagemagick (Ubuntu package)
libmagick++-6-headers (Ubuntu package)
libmagickwand-6.q16-dev (Ubuntu package)
imagemagick-6-common (Ubuntu package)
perlmagick (Ubuntu package)
libmagickcore-6.q16-6 (Ubuntu package)
libimage-magick-q16hdri-perl (Ubuntu package)
libmagickcore-6.q16hdri-dev (Ubuntu package)
libmagickcore-6-arch-config (Ubuntu package)
libmagick++-6.q16hdri-dev (Ubuntu package)
libmagickcore-6.q16-7-extra (Ubuntu package)
libmagickcore-6.q16hdri-7-extra (Ubuntu package)
libmagick++-6.q16hdri-9t64 (Ubuntu package)
libmagickwand-6.q16hdri-7t64 (Ubuntu package)
libmagickcore-6.q16-7t64 (Ubuntu package)
libmagick++-6.q16-9t64 (Ubuntu package)
libmagickwand-6.q16-7t64 (Ubuntu package)
libmagickcore-6.q16hdri-7t64 (Ubuntu package)
imagemagick-7.q16hdri (Ubuntu package)
libmagickwand-7.q16hdri-10 (Ubuntu package)
libmagickwand-7.q16hdri-dev (Ubuntu package)
libmagickcore-7.q16-dev (Ubuntu package)
libmagick++-7.q16hdri-5 (Ubuntu package)
libmagickwand-7-headers (Ubuntu package)
libmagickcore-7.q16hdri-10 (Ubuntu package)
libmagick++-7.q16hdri-dev (Ubuntu package)
libmagickcore-7.q16hdri-dev (Ubuntu package)
libmagick++-7-headers (Ubuntu package)
imagemagick-7-common (Ubuntu package)
libmagick++-7.q16-dev (Ubuntu package)
libmagickcore-7.q16hdri-10-extra (Ubuntu package)
imagemagick-7-doc (Ubuntu package)
libmagickcore-7-headers (Ubuntu package)
libmagickcore-7-arch-config (Ubuntu package)
libmagickcore-7.q16-10 (Ubuntu package)
libmagick++-7.q16-5 (Ubuntu package)
libmagickcore-7.q16-10-extra (Ubuntu package)
libmagickwand-7.q16-dev (Ubuntu package)
libmagickwand-7.q16-10 (Ubuntu package)
imagemagick-7.q16 (Ubuntu package)
libMagickCore-7_Q16HDRI10-debuginfo
ImageMagick-extra
libMagickWand-7_Q16HDRI10
ImageMagick-devel
libMagick++-7_Q16HDRI5
ImageMagick
libMagick++-devel
ImageMagick-debugsource
libMagickWand-7_Q16HDRI10-debuginfo
ImageMagick-doc
libMagickCore-7_Q16HDRI10
libMagick++-7_Q16HDRI5-debuginfo
ImageMagick-config-7-upstream
ImageMagick-config-7-SUSE
ImageMagick-debuginfo
perl-PerlMagick
perl-PerlMagick-debuginfo
ImageMagick-extra-debuginfo
libMagickCore-7_Q16HDRI10-64bit
libMagickWand-7_Q16HDRI10-64bit
libMagickCore-7_Q16HDRI10-64bit-debuginfo
libMagick++-7_Q16HDRI5-64bit
ImageMagick-devel-64bit
libMagick++-devel-64bit
libMagickWand-7_Q16HDRI10-64bit-debuginfo
libMagick++-7_Q16HDRI5-64bit-debuginfo
libMagick++-7_Q16HDRI5-32bit-debuginfo
libMagickWand-7_Q16HDRI10-32bit
libMagickWand-7_Q16HDRI10-32bit-debuginfo
libMagickCore-7_Q16HDRI10-32bit-debuginfo
libMagick++-devel-32bit
ImageMagick-devel-32bit
libMagickCore-7_Q16HDRI10-32bit
libMagick++-7_Q16HDRI5-32bit
ImageMagick-config-7-upstream-websafe
ImageMagick-config-7-upstream-open
ImageMagick-config-7-upstream-limited
ImageMagick-config-7-upstream-secure
ImageMagick-djvu
ImageMagick-perl
ImageMagick-libs
ImageMagick-c++-devel
ImageMagick-c++
imagemagick (Debian package)
How to mitigate CVE-2026-56370
libmagickcore-6.q16hdri-6 (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
libmagickwand-6.q16hdri-6 (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
libmagickcore-6-headers (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
imagemagick-6.q16 (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickwand-6.q16-6 (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
libimage-magick-q16-perl (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13, 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickwand-dev (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13, 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-6.q16-6-extra (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
imagemagick-6.q16hdri (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickwand-6-headers (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickcore-6.q16-dev (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickcore-dev (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13, 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickwand-6.q16hdri-dev (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libimage-magick-perl (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13, 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
imagemagick-common (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
libmagick++-6.q16hdri-8 (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
imagemagick-doc (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
libmagick++-6.q16-dev (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
imagemagick-6-doc (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
libmagick++-6.q16-8 (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
libmagick++-dev (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13, 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-6.q16hdri-6-extra (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
imagemagick (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13, 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagick++-6-headers (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickwand-6.q16-dev (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
imagemagick-6-common (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
perlmagick (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13, 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-6.q16-6 (Ubuntu package) - update to 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14
libimage-magick-q16hdri-perl (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13, 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-6.q16hdri-dev (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickcore-6-arch-config (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagick++-6.q16hdri-dev (Ubuntu package) - addressed in versions 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm14, 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickcore-6.q16-7-extra (Ubuntu package) - update to 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickcore-6.q16hdri-7-extra (Ubuntu package) - update to 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagick++-6.q16hdri-9t64 (Ubuntu package) - update to 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickwand-6.q16hdri-7t64 (Ubuntu package) - update to 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickcore-6.q16-7t64 (Ubuntu package) - update to 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagick++-6.q16-9t64 (Ubuntu package) - update to 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickwand-6.q16-7t64 (Ubuntu package) - update to 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
libmagickcore-6.q16hdri-7t64 (Ubuntu package) - update to 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm13
imagemagick-7.q16hdri (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickwand-7.q16hdri-10 (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickwand-7.q16hdri-dev (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-7.q16-dev (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagick++-7.q16hdri-5 (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickwand-7-headers (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-7.q16hdri-10 (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagick++-7.q16hdri-dev (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-7.q16hdri-dev (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagick++-7-headers (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
imagemagick-7-common (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagick++-7.q16-dev (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-7.q16hdri-10-extra (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
imagemagick-7-doc (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-7-headers (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-7-arch-config (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-7.q16-10 (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagick++-7.q16-5 (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickcore-7.q16-10-extra (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickwand-7.q16-dev (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libmagickwand-7.q16-10 (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
imagemagick-7.q16 (Ubuntu package) - update to 8:7.1.2.18+dfsg1-1ubuntu0.1~esm2
libMagickCore-7_Q16HDRI10-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-extra - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickWand-7_Q16HDRI10 - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-devel - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
libMagick++-7_Q16HDRI5 - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
libMagick++-devel - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-debugsource - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
libMagickWand-7_Q16HDRI10-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-doc - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickCore-7_Q16HDRI10 - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
libMagick++-7_Q16HDRI5-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-config-7-upstream - update to 7.1.0.9-150400.6.96.1
ImageMagick-config-7-SUSE - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
perl-PerlMagick - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
perl-PerlMagick-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-extra-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickCore-7_Q16HDRI10-64bit - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickWand-7_Q16HDRI10-64bit - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickCore-7_Q16HDRI10-64bit-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagick++-7_Q16HDRI5-64bit - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
ImageMagick-devel-64bit - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagick++-devel-64bit - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickWand-7_Q16HDRI10-64bit-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagick++-7_Q16HDRI5-64bit-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagick++-7_Q16HDRI5-32bit-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickWand-7_Q16HDRI10-32bit - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickWand-7_Q16HDRI10-32bit-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickCore-7_Q16HDRI10-32bit-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagick++-devel-32bit - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
ImageMagick-devel-32bit - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickCore-7_Q16HDRI10-32bit - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagick++-7_Q16HDRI5-32bit - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
ImageMagick-config-7-upstream-websafe - addressed in versions 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-config-7-upstream-open - addressed in versions 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-config-7-upstream-limited - addressed in versions 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-config-7-upstream-secure - addressed in versions 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
ImageMagick-djvu - update to 7.1.2.15-15
ImageMagick-perl - update to 7.1.2.15-15
ImageMagick-libs - update to 7.1.2.15-15
ImageMagick-doc - update to 7.1.2.15-15
ImageMagick-devel - update to 7.1.2.15-15
ImageMagick-c++-devel - update to 7.1.2.15-15
ImageMagick-c++ - update to 7.1.2.15-15
ImageMagick - update to 7.1.2.15-15
imagemagick (Debian package) - update to 8:7.1.1.43+dfsg1-1+deb13u11