========================================================================== Ubuntu Security Notice USN-8526-1 July 09, 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: Xianrui Dong discovered that libheif had an out-of-bounds read in its HEIF sequence track parser. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-47254) 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) Ariel Koren discovered that libheif had an integer underflow in its grid image tile coordinate transform. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2026-48029) It was discovered that libheif had a missing bound check in its HEIF sequence parser, allowing unbounded heap allocation. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-50142) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS heif-gdk-pixbuf 1.21.2-3ubuntu0.3 heif-thumbnailer 1.21.2-3ubuntu0.3 heif-view 1.21.2-3ubuntu0.3 libheif-dev 1.21.2-3ubuntu0.3 libheif-examples 1.21.2-3ubuntu0.3 libheif-plugin-aomdec 1.21.2-3ubuntu0.3 libheif-plugin-aomenc 1.21.2-3ubuntu0.3 libheif-plugin-dav1d 1.21.2-3ubuntu0.3 libheif-plugin-ffmpegdec 1.21.2-3ubuntu0.3 libheif-plugin-j2kdec 1.21.2-3ubuntu0.3 libheif-plugin-j2kenc 1.21.2-3ubuntu0.3 libheif-plugin-jpegdec 1.21.2-3ubuntu0.3 libheif-plugin-jpegenc 1.21.2-3ubuntu0.3 libheif-plugin-kvazaar 1.21.2-3ubuntu0.3 libheif-plugin-libde265 1.21.2-3ubuntu0.3 libheif-plugin-rav1e 1.21.2-3ubuntu0.3 libheif-plugin-svtenc 1.21.2-3ubuntu0.3 libheif-plugin-x265 1.21.2-3ubuntu0.3 libheif-plugins-all 1.21.2-3ubuntu0.3 libheif1 1.21.2-3ubuntu0.3 Ubuntu 25.10 heif-gdk-pixbuf 1.20.2-1ubuntu0.6 heif-thumbnailer 1.20.2-1ubuntu0.6 heif-view 1.20.2-1ubuntu0.6 libheif-dev 1.20.2-1ubuntu0.6 libheif-examples 1.20.2-1ubuntu0.6 libheif-plugin-aomdec 1.20.2-1ubuntu0.6 libheif-plugin-aomenc 1.20.2-1ubuntu0.6 libheif-plugin-dav1d 1.20.2-1ubuntu0.6 libheif-plugin-ffmpegdec 1.20.2-1ubuntu0.6 libheif-plugin-j2kdec 1.20.2-1ubuntu0.6 libheif-plugin-j2kenc 1.20.2-1ubuntu0.6 libheif-plugin-jpegdec 1.20.2-1ubuntu0.6 libheif-plugin-jpegenc 1.20.2-1ubuntu0.6 libheif-plugin-kvazaar 1.20.2-1ubuntu0.6 libheif-plugin-libde265 1.20.2-1ubuntu0.6 libheif-plugin-rav1e 1.20.2-1ubuntu0.6 libheif-plugin-svtenc 1.20.2-1ubuntu0.6 libheif-plugin-x265 1.20.2-1ubuntu0.6 libheif-plugins-all 1.20.2-1ubuntu0.6 libheif1 1.20.2-1ubuntu0.6 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8526-1 CVE-2026-47254, CVE-2026-47709, CVE-2026-47714, CVE-2026-48029, CVE-2026-50142 Package Information: https://launchpad.net/ubuntu/+source/libheif/1.21.2-3ubuntu0.3 https://launchpad.net/ubuntu/+source/libheif/1.20.2-1ubuntu0.6
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