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Ubuntu ImageMagick Serious Buffer Overflow DoS Vulnerability USN-8468-1

ubuntu
Calendar Grey June 25, 2026
Dist Ubuntu Esm H88
Several security issues addressed in ImageMagick for Ubuntu releases, focusing on information disclosure and code execution risks.
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 incorrectly handled certain images

when using the wavelet-denoise operator. An attacker could possibly use

this issue to trigger a heap buffer over-read, resulting in information

disclosure. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS,

Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-27798)

It was discovered that ImageMagick incorrectly handled certain DJVU

images. An attacker could possibly use this issue to trigger a heap

buffer over-read, resulting in information disclosure. (CVE-2026-27799)

It was discovered that ImageMagick incorrectly handled certain MNG

images. An attacker could possibly use this issue to trigger a stack

buffer overflow, resulting in arbitrary code execution. (CVE-2026-28690)

It was discovered that ImageMagick incorrectly handled certain JBIG

images. An attacker coul...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory arbitrary code execution Ubuntu important image manipulation information disclosure

Update Instructions

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

Ubuntu 24.04 LTS
  imagemagick-6.q16               8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  imagemagick-6.q16hdri           8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libimage-magick-perl            8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libimage-magick-q16hdri-perl    8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagick++-6-headers           8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagick++-6.q16-9t64          8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagick++-6.q16-dev           8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-9t64      8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-dev       8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagick++-dev                 8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickcore-6-arch-config     8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickcore-6-headers         8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-7-extra     8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-7t64        8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-dev         8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-7-extra  8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-7t64    8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-dev     8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickcore-dev               8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickwand-6-headers         8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-7t64        8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-dev         8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-7t64    8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-dev     8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  libmagickwand-dev               8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro
  perlmagick                      8:6.9.12.98+dfsg1-5.2ubuntu0.1~esm10
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  imagemagick-6-common            8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  imagemagick-6.q16               8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  imagemagick-6.q16hdri           8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  imagemagick-common              8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libimage-magick-perl            8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libimage-magick-q16hdri-perl    8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagick++-6-headers           8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16-8             8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16-dev           8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-8         8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-dev       8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagick++-dev                 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6-arch-config     8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6-headers         8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-6           8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-6-extra     8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-dev         8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-6       8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-6-extra  8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-dev     8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickcore-dev               8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickwand-6-headers         8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-6           8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-dev         8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-6       8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-dev     8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  libmagickwand-dev               8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro
  perlmagick                      8:6.9.11.60+dfsg-1.3ubuntu0.22.04.5+esm11
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  imagemagick-6-common            8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  imagemagick-common              8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libimage-magick-perl            8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libimage-magick-q16hdri-perl    8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagick++-6-headers           8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16-8             8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16-dev           8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-dev       8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagick++-dev                 8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6-arch-config     8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6-headers         8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-6-extra     8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-dev         8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-6-extra  8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-dev     8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickcore-dev               8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickwand-6-headers         8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-6           8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-dev         8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-6       8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-dev     8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  libmagickwand-dev               8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro
  perlmagick                      8:6.9.10.23+dfsg-2.1ubuntu11.11+esm11
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  imagemagick-6.q16               8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  imagemagick-6.q16hdri           8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libimage-magick-perl            8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libimage-magick-q16hdri-perl    8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagick++-6-headers           8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagick++-6.q16-7             8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagick++-6.q16-dev           8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-7         8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagick++-6.q16hdri-dev       8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagick++-dev                 8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-3           8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-3-extra     8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-dev         8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-3       8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-3-extra  8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickcore-6.q16hdri-dev     8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickcore-dev               8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickwand-6-headers         8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-3           8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-dev         8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-3       8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickwand-6.q16hdri-dev     8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  libmagickwand-dev               8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro
  perlmagick                      8:6.9.7.4+dfsg-16ubuntu6.15+esm13
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  imagemagick                     8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  imagemagick-6.q16               8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  imagemagick-common              8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libimage-magick-perl            8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libimage-magick-q16-perl        8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagick++-6-headers           8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagick++-6.q16-5v5           8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagick++-6.q16-dev           8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagickcore-6-arch-config     8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagickcore-6-headers         8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-2           8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-2-extra     8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagickcore-6.q16-dev         8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagickwand-6-headers         8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-2           8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  libmagickwand-6.q16-dev         8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro
  perlmagick                      8:6.8.9.9-7ubuntu5.16+esm21
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  imagemagick                     8:6.7.7.10-6ubuntu3.13+esm22
                                  Available with Ubuntu Pro
  imagemagick-common              8:6.7.7.10-6ubuntu3.13+esm22
                                  Available with Ubuntu Pro
  libmagick++-dev                 8:6.7.7.10-6ubuntu3.13+esm22
                                  Available with Ubuntu Pro
  libmagick++5                    8:6.7.7.10-6ubuntu3.13+esm22
                                  Available with Ubuntu Pro
  libmagickcore-dev               8:6.7.7.10-6ubuntu3.13+esm22
                                  Available with Ubuntu Pro
  libmagickcore5                  8:6.7.7.10-6ubuntu3.13+esm22
                                  Available with Ubuntu Pro
  libmagickcore5-extra            8:6.7.7.10-6ubuntu3.13+esm22
                                  Available with Ubuntu Pro
  libmagickwand-dev               8:6.7.7.10-6ubuntu3.13+esm22
                                  Available with Ubuntu Pro
  libmagickwand5                  8:6.7.7.10-6ubuntu3.13+esm22
                                  Available with Ubuntu Pro
  perlmagick                      8:6.7.7.10-6ubuntu3.13+esm22
                                  Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-8468-1

CVE-2026-27798, CVE-2026-27799, CVE-2026-28690, CVE-2026-28691,

CVE-2026-28692, CVE-2026-28693

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8468-1

Topics%20covered

Topics Covered

security advisory arbitrary code execution Ubuntu important image manipulation information disclosure

Package Information

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