Memory leak in ImageMagick - CVE-2026-56365

Vulnerability identifier: #VU125868

CSH Severity: Low

CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-56365

CWE-ID: CWE-401

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to missing release of memory after effective lifetime in the PNG encoder when writing an MNG image. A remote attacker can trigger a failure while writing an MNG image to cause a denial of service.

ImageMagick
Debian Linux
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
Desktop Applications Module
Development Tools Module
openSUSE Leap
Anolis OS
libMagickCore-6_Q16-1-debuginfo
ImageMagick-config-6-SUSE
libMagickWand-6_Q16-1
ImageMagick-debuginfo
libMagickWand-6_Q16-1-debuginfo
ImageMagick-debugsource
ImageMagick-config-6-upstream
ImageMagick-devel
libMagick++-devel
libMagickCore-6_Q16-1
ImageMagick-config-7-SUSE
ImageMagick-extra
ImageMagick-config-7-upstream
libMagick++-7_Q16HDRI5-debuginfo
libMagickCore-7_Q16HDRI10
libMagickCore-7_Q16HDRI10-debuginfo
libMagickWand-7_Q16HDRI10-debuginfo
ImageMagick
libMagick++-7_Q16HDRI5
libMagickWand-7_Q16HDRI10
perl-PerlMagick
ImageMagick-doc
libMagickCore-7_Q16HDRI10-32bit
ImageMagick-devel-32bit
libMagick++-devel-32bit
libMagickCore-7_Q16HDRI10-32bit-debuginfo
libMagickWand-7_Q16HDRI10-32bit-debuginfo
libMagickWand-7_Q16HDRI10-32bit
libMagick++-7_Q16HDRI5-32bit
libMagick++-7_Q16HDRI5-32bit-debuginfo
libMagick++-7_Q16HDRI5-64bit-debuginfo
libMagickWand-7_Q16HDRI10-64bit-debuginfo
libMagick++-devel-64bit
ImageMagick-devel-64bit
libMagick++-7_Q16HDRI5-64bit
libMagickCore-7_Q16HDRI10-64bit-debuginfo
libMagickWand-7_Q16HDRI10-64bit
libMagickCore-7_Q16HDRI10-64bit
ImageMagick-extra-debuginfo
perl-PerlMagick-debuginfo
ImageMagick-config-7-upstream-websafe
ImageMagick-config-7-upstream-open
ImageMagick-config-7-upstream-limited
ImageMagick-config-7-upstream-secure
imagemagick (Debian package)
ImageMagick-c++
ImageMagick-c++-devel
ImageMagick-djvu
ImageMagick-libs
ImageMagick-perl

Install security update from vendor's website.

ImageMagick - addressed in versions 6.9.13-44, 7.1.2-19
libMagickCore-6_Q16-1-debuginfo - update to 6.8.8.1-71.259.1
ImageMagick-config-6-SUSE - update to 6.8.8.1-71.259.1
libMagickWand-6_Q16-1 - update to 6.8.8.1-71.259.1
ImageMagick-debuginfo - addressed in versions 6.8.8.1-71.259.1, 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-6_Q16-1-debuginfo - update to 6.8.8.1-71.259.1
ImageMagick-debugsource - addressed in versions 6.8.8.1-71.259.1, 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-6-upstream - update to 6.8.8.1-71.259.1
ImageMagick-devel - addressed in versions 6.8.8.1-71.259.1, 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 6.8.8.1-71.259.1, 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1, 7.1.1.43-150700.3.65.1
libMagickCore-6_Q16-1 - update to 6.8.8.1-71.259.1
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-extra - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
ImageMagick-config-7-upstream - update to 7.1.0.9-150400.6.96.1
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
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
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
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 - 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
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
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
ImageMagick-doc - 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
ImageMagick-devel-32bit - 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
libMagickCore-7_Q16HDRI10-32bit-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
libMagickWand-7_Q16HDRI10-32bit-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
libMagick++-7_Q16HDRI5-32bit - 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
libMagick++-7_Q16HDRI5-64bit-debuginfo - 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++-devel-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++-7_Q16HDRI5-64bit - 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
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 - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
ImageMagick-extra-debuginfo - addressed in versions 7.1.0.9-150400.6.96.1, 7.1.1.21-150600.3.73.1
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-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 (Debian package) - update to 8:7.1.1.43+dfsg1-1+deb13u11
ImageMagick - update to 7.1.2.15-15
ImageMagick-c++ - update to 7.1.2.15-15
ImageMagick-c++-devel - update to 7.1.2.15-15
ImageMagick-devel - update to 7.1.2.15-15
ImageMagick-djvu - update to 7.1.2.15-15
ImageMagick-doc - update to 7.1.2.15-15
ImageMagick-libs - update to 7.1.2.15-15
ImageMagick-perl - update to 7.1.2.15-15

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-x928-4434-crqj

• Multiple vulnerabilities in ImageMagick
• Debian update for imagemagick
• SUSE update for ImageMagick
• SUSE update for ImageMagick
• SUSE update for ImageMagick
• SUSE update for ImageMagick
• Anolis OS update for ImageMagick