# CVE-2026-50142: libheif: libheif is a HEIF and AVIF file format decoder and encoder CVE-2026-50142 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: High. - Web page: https://patchblox.com/security/cve/CVE-2026-50142 - Priority: High - CVSS: 7.5 (high) - EPSS: 0.0066 - 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. From 1.19.0 until 1.23.0, a crafted HEIF sequence accepted by heif_context_read_from_memory() with the msf1 sequence brand can cause unbounded heap allocation. In libheif/sequences/seq_boxes.cc, Box_stsz::parse() applies max_sequence_frames only to variable-size samples, so fixed-size mode accepts an attacker-controlled sample_count without a bound. In libheif/sequences/track.cc, Track::load() also adds current_sample_idx and samples_per_chunk in 32-bit arithmetic, allowing the consistency check to be bypassed by wraparound. The resulting values reach the Chunk::Chunk() allocation path, which can consume gigabytes of memory and crash or stall the process through memory exhaustion. This issue is fixed in version 1.23.0. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | heif-gdk-pixbuf Ubuntu 25.10 (questing) | 1.20.2-1ubuntu0.6 | [heif-gdk-pixbuf 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-heif-gdk-pixbuf-1.20.2-1ubuntu0.6.md) | Jul 21, 2026 | | 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [heif-thumbnailer 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-heif-thumbnailer-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [heif-view 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-heif-view-1.20.2-1ubuntu0.6.md) | Jul 21, 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-2026-50142](https://patchblox.com/security/data/fix/linux/debian-cve-2026-50142.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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-examples 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-examples-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-aomdec 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-aomdec-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-aomenc 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-aomenc-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-dav1d 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-dav1d-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-ffmpegdec 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-ffmpegdec-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-j2kdec 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-j2kdec-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-j2kenc 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-j2kenc-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-jpegdec 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-jpegdec-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-jpegenc 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-jpegenc-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-kvazaar 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-kvazaar-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-libde265 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-libde265-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-rav1e 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-rav1e-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-svtenc 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-svtenc-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugin-x265 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugin-x265-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif-plugins-all 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif-plugins-all-1.20.2-1ubuntu0.6.md) | Jul 21, 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 25.10 (questing) | 1.20.2-1ubuntu0.6 | [libheif1 1.20.2-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libheif1-1.20.2-1ubuntu0.6.md) | Jul 21, 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 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.