libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 800-byte HEIF sequence file causes an infinite loop in Box_stts::get_sample_duration(), consuming 100% CPU indefinitely with zero progress, leading to DoS. The loop has no iteration limit or timeout and is triggered during file open (parsing) - before any user interaction or image decoding. The process stays alive (no crash, no error logged), making it invisible to crash-based monitoring. This issue has been fixed in version 1.22.0.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade libheif | Jun 18, 2026 | May 19, 2026 |
| Ubuntu | — | Upgrade libheif1Upgrade libheif-plugin-x265Upgrade libheif-plugin-jpegdecUpgrade libheif-plugin-ffmpegdecUpgrade libheif-dev (Ubuntu Pro)Upgrade heif-thumbnailer (Ubuntu Pro)Upgrade heif-gdk-pixbuf (Ubuntu Pro)Upgrade libheif-plugin-jpegencUpgrade libheif-plugins-allUpgrade libheif-plugin-libde265Upgrade libheif-devUpgrade libheif-plugin-svtencUpgrade libheif-plugin-aomdecUpgrade libheif-plugin-j2kencUpgrade libheif-plugin-j2kdecUpgrade libheif-plugin-kvazaarUpgrade heif-gdk-pixbufUpgrade libheif1 (Ubuntu Pro)Upgrade heif-viewUpgrade libheif-plugin-rav1eUpgrade heif-thumbnailerUpgrade libheif-plugin-dav1dUpgrade libheif-plugin-aomenc | Jun 21, 2026 | Jun 18, 2026 |
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