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Alerts This Week
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Alerts This Week
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Ubuntu Imagemagick Critical Denial of Service Vulnerabilities USN-8558-1

ubuntu
Calendar Grey July 21, 2026
Scroller Ubuntu
Multiple security issues have been fixed in ImageMagick packages for Ubuntu LTS releases, including critical flaws that can lead to denial of service.
Several security issues were fixed in ImageMagick.

Summary

Several security issues were fixed in ImageMagick.

Software Description:

- imagemagick: Image manipulation programs and library

Details:

It was discovered that ImageMagick did not limit mutual references between

MVG files. An attacker could possibly use this issue to cause a stack

overflow, resulting in a denial of service. This issue only affected Ubuntu

14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu

22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2025-68950)

It was discovered that the ImageMagick MSL coder destroyed a cloned image

twice when an MSL script failed. An attacker could possibly use this issue

to cause a use-after-free, resulting in a denial of service, or arbitrary

code execution. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04

LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04

LTS. (CVE-2026-28688)

It was discovered that the ImageMagick VIFF image encoder did not properly

validate the packet count, leading to an in...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu vulnerability imagemagick

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
  imagemagick-7-common            8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  imagemagick-7.q16               8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  imagemagick-7.q16hdri           8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libimage-magick-q16hdri-perl    8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagick++-7.q16-5             8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagick++-7.q16-dev           8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagick++-7.q16hdri-5         8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagick++-7.q16hdri-dev       8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickcore-7-arch-config     8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickcore-7.q16-10          8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickcore-7.q16-10-extra    8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickcore-7.q16-dev         8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickcore-7.q16hdri-10      8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickcore-7.q16hdri-10-extra  8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickcore-7.q16hdri-dev     8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickwand-7-headers         8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickwand-7.q16-10          8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickwand-7.q16-dev         8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickwand-7.q16hdri-10      8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmagickwand-7.q16hdri-dev     8:7.1.2.18+dfsg1-1ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 24.04 LTS
  imagemagick-6-common            8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  imagemagick-6.q16               8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  imagemagick-6.q16hdri           8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libimage-magick-q16hdri-perl    8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16-9t64          8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16-dev           8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-9t64      8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-dev       8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-7-extra     8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-7t64        8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-dev         8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-7-extra  8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-7t64    8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-dev     8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickwand-6-headers         8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-7t64        8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-dev         8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-7t64    8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-dev     8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm11
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  imagemagick-6-common            8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  imagemagick-6.q16               8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  imagemagick-6.q16hdri           8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libimage-magick-q16hdri-perl    8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagick++-6.q16-8             8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagick++-6.q16-dev           8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-8         8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-dev       8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6-arch-config     8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-6           8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-6-extra     8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-dev         8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-6       8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-6-extra  8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-dev     8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-6           8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-dev         8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-6       8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-dev     8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm12
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  imagemagick-6-common            8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  imagemagick-6.q16               8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  imagemagick-6.q16hdri           8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libimage-magick-q16hdri-perl    8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagick++-6.q16-8             8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagick++-6.q16-dev           8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-8         8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-dev       8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-6           8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-6-extra     8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-dev         8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-6       8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-6-extra  8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-dev     8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-6           8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-dev         8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-6       8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-dev     8:6.9.10.23+dfsg-2.1ubuntu11.11+esm12
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  imagemagick-6-common            8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  imagemagick-6.q16               8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  imagemagick-6.q16hdri           8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libimage-magick-q16hdri-perl    8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagick++-6.q16-7             8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagick++-6.q16-dev           8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-7         8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-dev       8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-3           8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-3-extra     8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-dev         8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-3       8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-3-extra  8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-dev     8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-3           8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-dev         8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-3       8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-dev     8:6.9.7.4+dfsg-16ubuntu6.15+esm14
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  imagemagick-6.q16               8:6.8.9.9-7ubuntu5.16+esm22
                                  Available with Ubuntu Pro
  imagemagick-common              8:6.8.9.9-7ubuntu5.16+esm22
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:6.8.9.9-7ubuntu5.16+esm22
                                  Available with Ubuntu Pro
  libmagick++-6.q16-5v5           8:6.8.9.9-7ubuntu5.16+esm22
                                  Available with Ubuntu Pro
  libmagick++-6.q16-dev           8:6.8.9.9-7ubuntu5.16+esm22
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-2           8:6.8.9.9-7ubuntu5.16+esm22
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-2-extra     8:6.8.9.9-7ubuntu5.16+esm22
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-dev         8:6.8.9.9-7ubuntu5.16+esm22
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-2           8:6.8.9.9-7ubuntu5.16+esm22
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-dev         8:6.8.9.9-7ubuntu5.16+esm22
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  imagemagick                     8:6.7.7.10-6ubuntu3.13+esm23
                                  Available with Ubuntu Pro
  imagemagick-common              8:6.7.7.10-6ubuntu3.13+esm23
                                  Available with Ubuntu Pro
  libmagick++-dev                 8:6.7.7.10-6ubuntu3.13+esm23
                                  Available with Ubuntu Pro
  libmagick++5                    8:6.7.7.10-6ubuntu3.13+esm23
                                  Available with Ubuntu Pro
  libmagickcore-dev               8:6.7.7.10-6ubuntu3.13+esm23
                                  Available with Ubuntu Pro
  libmagickcore5                  8:6.7.7.10-6ubuntu3.13+esm23
                                  Available with Ubuntu Pro
  libmagickcore5-extra            8:6.7.7.10-6ubuntu3.13+esm23
                                  Available with Ubuntu Pro
  libmagickwand-dev               8:6.7.7.10-6ubuntu3.13+esm23
                                  Available with Ubuntu Pro
  libmagickwand5                  8:6.7.7.10-6ubuntu3.13+esm23
                                  Available with Ubuntu Pro
  perlmagick                      8:6.7.7.10-6ubuntu3.13+esm23
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8558-1

CVE-2025-68950, CVE-2026-28688, CVE-2026-33900, CVE-2026-33905

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8558-1

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu vulnerability imagemagick

Package Information

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