========================================================================== Ubuntu Security Notice USN-8526-2 July 14, 2026
libheif vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 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: 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) 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 Package Information: https://launchpad.net/ubuntu/+source/libheif/1.17.6-1ubuntu4.6
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