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[USN-8479-1] libheif vulnerabilities

Posted on 29 June 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8479-1
June 29, 2026

libheif vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 25.10

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:

It was discovered that libheif incorrectly handled certain crafted HEIF
files. An attacker could possibly use this issue to cause a denial of
service or execute arbitrary code. (CVE-2026-47178)

It was discovered that libheif incorrectly validated offsets when
decoding certain crafted HEIF files. An attacker could possibly use this
issue to cause a denial of service. This issue only affected Ubuntu 26.04
LTS. (CVE-2026-49271)

Update instructions:

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

Ubuntu 26.04 LTS
heif-gdk-pixbuf 1.21.2-3ubuntu0.2
heif-thumbnailer 1.21.2-3ubuntu0.2
heif-view 1.21.2-3ubuntu0.2
libheif-dev 1.21.2-3ubuntu0.2
libheif-plugin-aomdec 1.21.2-3ubuntu0.2
libheif-plugin-aomenc 1.21.2-3ubuntu0.2
libheif-plugin-dav1d 1.21.2-3ubuntu0.2
libheif-plugin-ffmpegdec 1.21.2-3ubuntu0.2
libheif-plugin-j2kdec 1.21.2-3ubuntu0.2
libheif-plugin-j2kenc 1.21.2-3ubuntu0.2
libheif-plugin-jpegdec 1.21.2-3ubuntu0.2
libheif-plugin-jpegenc 1.21.2-3ubuntu0.2
libheif-plugin-kvazaar 1.21.2-3ubuntu0.2
libheif-plugin-libde265 1.21.2-3ubuntu0.2
libheif-plugin-rav1e 1.21.2-3ubuntu0.2
libheif-plugin-svtenc 1.21.2-3ubuntu0.2
libheif-plugin-x265 1.21.2-3ubuntu0.2
libheif-plugins-all 1.21.2-3ubuntu0.2
libheif1 1.21.2-3ubuntu0.2

Ubuntu 25.10
heif-gdk-pixbuf 1.20.2-1ubuntu0.5
heif-thumbnailer 1.20.2-1ubuntu0.5
heif-view 1.20.2-1ubuntu0.5
libheif-dev 1.20.2-1ubuntu0.5
libheif-plugin-aomdec 1.20.2-1ubuntu0.5
libheif-plugin-aomenc 1.20.2-1ubuntu0.5
libheif-plugin-dav1d 1.20.2-1ubuntu0.5
libheif-plugin-ffmpegdec 1.20.2-1ubuntu0.5
libheif-plugin-j2kdec 1.20.2-1ubuntu0.5
libheif-plugin-j2kenc 1.20.2-1ubuntu0.5
libheif-plugin-jpegdec 1.20.2-1ubuntu0.5
libheif-plugin-jpegenc 1.20.2-1ubuntu0.5
libheif-plugin-kvazaar 1.20.2-1ubuntu0.5
libheif-plugin-libde265 1.20.2-1ubuntu0.5
libheif-plugin-rav1e 1.20.2-1ubuntu0.5
libheif-plugin-svtenc 1.20.2-1ubuntu0.5
libheif-plugin-x265 1.20.2-1ubuntu0.5
libheif-plugins-all 1.20.2-1ubuntu0.5
libheif1 1.20.2-1ubuntu0.5

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

References:
https://ubuntu.com/security/notices/USN-8479-1
CVE-2026-47178, CVE-2026-49271

Package Information:
https://launchpad.net/ubuntu/+source/libheif/1.21.2-3ubuntu0.2
https://launchpad.net/ubuntu/+source/libheif/1.20.2-1ubuntu0.5

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