{"id":"UBUNTU-CVE-2026-49271","details":"libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the compressed item buffer, producing an out-of-bounds heap read and crash. Version 1.22.1 patches the issue.","modified":"2026-06-29T23:15:50.466981794Z","published":"2026-06-19T18:16:00Z","related":["USN-8479-1"],"upstream":["CVE-2026-49271"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-49271"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-49271"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vf"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8479-1"}],"affected":[{"package":{"name":"libheif","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libheif?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.21.2-3ubuntu0.2"}]}],"versions":["1.20.2-1","1.20.2-2","1.20.2-2build1","1.20.2-2build2","1.20.2-2ubuntu1","1.21.2-1","1.21.2-3","1.21.2-3ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"heif-gdk-pixbuf","binary_version":"1.21.2-3ubuntu0.2"},{"binary_name":"heif-thumbnailer","binary_version":"1.21.2-3ubuntu0.2"},{"binary_name":"heif-view","binary_version":"1.21.2-3ubuntu0.2"},{"binary_name":"libheif-examples","binary_version":"1.21.2-3ubuntu0.2"},{"binary_version":"1.21.2-3ubuntu0.2","binary_name":"libheif-plugin-aomdec"},{"binary_version":"1.21.2-3ubuntu0.2","binary_name":"libheif-plugin-aomenc"},{"binary_name":"libheif-plugin-dav1d","binary_version":"1.21.2-3ubuntu0.2"},{"binary_name":"libheif-plugin-ffmpegdec","binary_version":"1.21.2-3ubuntu0.2"},{"binary_name":"libheif-plugin-j2kdec","binary_version":"1.21.2-3ubuntu0.2"},{"binary_version":"1.21.2-3ubuntu0.2","binary_name":"libheif-plugin-j2kenc"},{"binary_name":"libheif-plugin-jpegdec","binary_version":"1.21.2-3ubuntu0.2"},{"binary_version":"1.21.2-3ubuntu0.2","binary_name":"libheif-plugin-jpegenc"},{"binary_name":"libheif-plugin-kvazaar","binary_version":"1.21.2-3ubuntu0.2"},{"binary_name":"libheif-plugin-libde265","binary_version":"1.21.2-3ubuntu0.2"},{"binary_name":"libheif-plugin-rav1e","binary_version":"1.21.2-3ubuntu0.2"},{"binary_name":"libheif-plugin-svtenc","binary_version":"1.21.2-3ubuntu0.2"},{"binary_version":"1.21.2-3ubuntu0.2","binary_name":"libheif-plugin-x265"},{"binary_name":"libheif-plugins-all","binary_version":"1.21.2-3ubuntu0.2"},{"binary_name":"libheif1","binary_version":"1.21.2-3ubuntu0.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49271.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}