# CVE-2026-47254: libheif: libheif is a HEIF and AVIF file format decoder and encoder CVE-2026-47254 is fixed in 20 products on 1 platform, first by SUSE-SU-2026:22153-1, released June 17, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-47254 - Priority: Routine - CVSS: 6.1 (medium) - EPSS: 0.0016 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jun 17, 2026 ## Description libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.0, `Track::init_sample_timing_table()` in `libheif/sequences/track.cc` stores an out-of-bounds chunk index (`m_chunks.size()`) into `m_presentation_timeline` when the number of chunks defined in the `stco` box is less than the number of samples in `stsz`. A subsequent call to `heif_track_get_next_raw_sequence_sample()` reads `m_chunks[chunk_idx]` with that OOB index, causing a heap-buffer-overflow. Version 1.22.0 fixes the issue. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | heif-gdk-pixbuf Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [heif-gdk-pixbuf 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-heif-gdk-pixbuf-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | heif-thumbnailer Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [heif-thumbnailer 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-heif-thumbnailer-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | heif-view Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [heif-view 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-heif-view-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif Debian 14 | 1.23.1-1 | [DEBIAN-CVE-2026-47254](https://patchblox.com/security/data/fix/linux/debian-cve-2026-47254.md) | Aug 11, 2026 | | Linux | libheif opensuse-leap 16.0 | 1.23.0-160000.1.1 | [OPENSUSE-SU-2026:20974-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20974-1.md) | Jun 17, 2026 | | Linux | libheif sles 15.7 | 1.23.0-150700.3.15.1 | [SUSE-SU-2026:2622-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-2622-1.md) | Jun 24, 2026 | | Linux | libheif sles 16.0 | 1.23.0-160000.1.1 | [SUSE-SU-2026:22153-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22153-1.md) | Jun 17, 2026 | | Linux | libheif-examples Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-examples 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-examples-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-aomdec Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-aomdec 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-aomdec-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-aomenc Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-aomenc 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-aomenc-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-dav1d Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-dav1d 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-dav1d-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-ffmpegdec Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-ffmpegdec 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-ffmpegdec-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-j2kdec Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-j2kdec 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-j2kdec-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-j2kenc Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-j2kenc 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-j2kenc-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-jpegdec Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-jpegdec 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-jpegdec-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-jpegenc Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-jpegenc 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-jpegenc-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-kvazaar Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-kvazaar 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-kvazaar-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-libde265 Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-libde265 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-libde265-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-rav1e Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-rav1e 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-rav1e-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-svtenc Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-svtenc 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-svtenc-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugin-x265 Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugin-x265 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugin-x265-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif-plugins-all Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif-plugins-all 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif-plugins-all-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | | Linux | libheif1 Ubuntu 26.04.1 LTS (resolute) | 1.21.2-3ubuntu0.3 | [libheif1 1.21.2-3ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libheif1-1.21.2-3ubuntu0.3.md) | Jul 1, 2026 | --- Data as of 2026-11-08T19:12:23Z UTC. 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