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Ubuntu 24.04 libheif Significant Denial of Service Patch USN-8526-2

ubuntu
Calendar Grey July 14, 2026
Dist Ubuntu Esm H88
Several security issues in libheif fixed with updates for Ubuntu 24.04. Protect your systems against potential threats now.
Several security issues were fixed in libheif.

Summary

Several security issues were fixed in libheif.

Software Description:

- libheif: An ISO/IEC 23008-12:2017 HEIF and AVIF file format decoder and encoder

Details:

USN-8526-1 fixed vulnerabilities in libheif. This update provides the

corresponding updates for CVE-2026-47709 and CVE-2026-47714 in

Ubuntu 24.04 LTS.

Original advisory details:

Junyi Liu discovered that libheif had a null pointer dereference in its

image tiling interface. An attacker could possibly use this issue to

cause a denial of service. (CVE-2026-47709)

Calvin Young and Enoch Chow discovered that libheif had an integer

overflow in its inline mask size calculation. An attacker could

possibly use this issue to cause a denial of service or obtain sensitive

information. (CVE-2026-47714)

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu important CVE libheif

Update Instructions

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

Ubuntu 24.04 LTS
  heif-gdk-pixbuf                 1.17.6-1ubuntu4.6
  heif-thumbnailer                1.17.6-1ubuntu4.6
  libheif-dev                     1.17.6-1ubuntu4.6
  libheif-plugin-aomdec           1.17.6-1ubuntu4.6
  libheif-plugin-aomenc           1.17.6-1ubuntu4.6
  libheif-plugin-dav1d            1.17.6-1ubuntu4.6
  libheif-plugin-ffmpegdec        1.17.6-1ubuntu4.6
  libheif-plugin-j2kdec           1.17.6-1ubuntu4.6
  libheif-plugin-j2kenc           1.17.6-1ubuntu4.6
  libheif-plugin-jpegdec          1.17.6-1ubuntu4.6
  libheif-plugin-jpegenc          1.17.6-1ubuntu4.6
  libheif-plugin-libde265         1.17.6-1ubuntu4.6
  libheif-plugin-rav1e            1.17.6-1ubuntu4.6
  libheif-plugin-svtenc           1.17.6-1ubuntu4.6
  libheif-plugin-x265             1.17.6-1ubuntu4.6
  libheif1                        1.17.6-1ubuntu4.6

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

References

https://ubuntu.com/security/notices/USN-8526-2

https://ubuntu.com/security/notices/USN-8526-1

CVE-2026-47709, CVE-2026-47714

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8526-2

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu important CVE libheif

Package Information

https://launchpad.net/ubuntu/+source/libheif/1.17.6-1ubuntu4.6

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