Home / mailings [USN-8846-1] libheif vulnerabilities
Posted on 29 September 2026
Ubuntu Security==========================================================================Ubuntu Security Notice USN-8846-1
September 29, 2026
libheif vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
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:
Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain
compressed metadata. A remote attacker could possibly use this issue to
cause a denial of service. This issue only affected Ubuntu 24.04 LTS and
Ubuntu 26.04 LTS. (CVE-2026-84384)
Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain
HEIF sequence data. A remote attacker could possibly use this issue to
cause a denial of service. This issue only affected Ubuntu 26.04 LTS.
(CVE-2026-84446)
Yuqi Qiu and Xiang Li discovered that libheif incorrectly handled certain
image references. A remote attacker could possibly use this issue to
cause a denial of service. This issue only affected Ubuntu 26.04 LTS.
(CVE-2026-84447)
It was discovered that libheif incorrectly handled certain region masks.
A local attacker could possibly use this issue to obtain sensitive
information or cause a denial of service. This issue only affected Ubuntu
24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-84448)
It was discovered that libheif incorrectly handled certain images. A
remote attacker could possibly use this issue to cause a denial of
service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS,
Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-84449)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 26.04 LTS
heif-gdk-pixbuf 1.21.2-3ubuntu0.6
heif-thumbnailer 1.21.2-3ubuntu0.6
heif-view 1.21.2-3ubuntu0.6
libheif-dev 1.21.2-3ubuntu0.6
libheif-plugin-aomdec 1.21.2-3ubuntu0.6
libheif-plugin-aomenc 1.21.2-3ubuntu0.6
libheif-plugin-dav1d 1.21.2-3ubuntu0.6
libheif-plugin-ffmpegdec 1.21.2-3ubuntu0.6
libheif-plugin-j2kdec 1.21.2-3ubuntu0.6
libheif-plugin-j2kenc 1.21.2-3ubuntu0.6
libheif-plugin-jpegdec 1.21.2-3ubuntu0.6
libheif-plugin-jpegenc 1.21.2-3ubuntu0.6
libheif-plugin-kvazaar 1.21.2-3ubuntu0.6
libheif-plugin-libde265 1.21.2-3ubuntu0.6
libheif-plugin-rav1e 1.21.2-3ubuntu0.6
libheif-plugin-svtenc 1.21.2-3ubuntu0.6
libheif-plugin-x265 1.21.2-3ubuntu0.6
libheif-plugins-all 1.21.2-3ubuntu0.6
libheif1 1.21.2-3ubuntu0.6
Ubuntu 24.04 LTS
heif-gdk-pixbuf 1.17.6-1ubuntu4.9
heif-thumbnailer 1.17.6-1ubuntu4.9
libheif-dev 1.17.6-1ubuntu4.9
libheif-plugin-aomdec 1.17.6-1ubuntu4.9
libheif-plugin-aomenc 1.17.6-1ubuntu4.9
libheif-plugin-dav1d 1.17.6-1ubuntu4.9
libheif-plugin-ffmpegdec 1.17.6-1ubuntu4.9
libheif-plugin-j2kdec 1.17.6-1ubuntu4.9
libheif-plugin-j2kenc 1.17.6-1ubuntu4.9
libheif-plugin-jpegdec 1.17.6-1ubuntu4.9
libheif-plugin-jpegenc 1.17.6-1ubuntu4.9
libheif-plugin-libde265 1.17.6-1ubuntu4.9
libheif-plugin-rav1e 1.17.6-1ubuntu4.9
libheif-plugin-svtenc 1.17.6-1ubuntu4.9
libheif-plugin-x265 1.17.6-1ubuntu4.9
libheif1 1.17.6-1ubuntu4.9
Ubuntu 22.04 LTS
heif-gdk-pixbuf 1.12.0-2ubuntu0.1~esm5
Available with Ubuntu Pro
heif-thumbnailer 1.12.0-2ubuntu0.1~esm5
Available with Ubuntu Pro
libheif-dev 1.12.0-2ubuntu0.1~esm5
Available with Ubuntu Pro
libheif1 1.12.0-2ubuntu0.1~esm5
Available with Ubuntu Pro
Ubuntu 20.04 LTS
heif-gdk-pixbuf 1.6.1-1ubuntu0.1~esm5
Available with Ubuntu Pro
heif-thumbnailer 1.6.1-1ubuntu0.1~esm5
Available with Ubuntu Pro
libheif-dev 1.6.1-1ubuntu0.1~esm5
Available with Ubuntu Pro
libheif1 1.6.1-1ubuntu0.1~esm5
Available with Ubuntu Pro
Ubuntu 18.04 LTS
libheif-dev 1.1.0-2ubuntu0.1~esm5
Available with Ubuntu Pro
libheif1 1.1.0-2ubuntu0.1~esm5
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8846-1
CVE-2026-84384, CVE-2026-84446, CVE-2026-84447, CVE-2026-84448,
CVE-2026-84449
Package Information:
https://launchpad.net/ubuntu/+source/libheif/1.21.2-3ubuntu0.6
https://launchpad.net/ubuntu/+source/libheif/1.17.6-1ubuntu4.9
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