{"id":"UBUNTU-CVE-2026-84384","details":"libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.2, crafted HEIF or AVIF mime metadata and unci image data can cause decompress_brotli() and do_inflate() to grow accumulated output without an effective size limit or MemoryHandle accounting. The brotli path has no output bound, while the zlib path checks only a small temporary buffer in a branch that valid streams do not reach, and overlapping icef units can decompress the same payload repeatedly. HeifContext::interpret_heif_file_images() processes multiple compressed metadata items during file opening, allowing a small file to consume unbounded memory and terminate the process. This issue is fixed in version 1.23.2.","modified":"2026-09-21T21:40:32.495281580Z","published":"2026-09-21T00:00:00Z","upstream":["CVE-2026-84384"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-84384"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-84384"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/security/advisories/GHSA-24wx-9w62-c96w"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/commit/21893e8f66c8b79363ca2809391b07d35e1a95ec"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/releases/tag/v1.23.2"}],"affected":[{"package":{"name":"libheif","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libheif?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0-2","1.1.0-2ubuntu0.1~esm1","1.1.0-2ubuntu0.1~esm2","1.1.0-2ubuntu0.1~esm3","1.1.0-2ubuntu0.1~esm4"],"ecosystem_specific":{"binaries":[{"binary_name":"libheif-examples","binary_version":"1.1.0-2ubuntu0.1~esm4"},{"binary_version":"1.1.0-2ubuntu0.1~esm4","binary_name":"libheif1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84384.json"}},{"package":{"name":"libheif","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libheif?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5.0-1build1","1.5.1-1","1.5.1-1build1","1.6.0-1","1.6.1-1","1.6.1-1build1","1.6.1-1ubuntu0.1~esm1","1.6.1-1ubuntu0.1~esm2","1.6.1-1ubuntu0.1~esm3","1.6.1-1ubuntu0.1~esm4"],"ecosystem_specific":{"binaries":[{"binary_name":"heif-gdk-pixbuf","binary_version":"1.6.1-1ubuntu0.1~esm4"},{"binary_name":"heif-thumbnailer","binary_version":"1.6.1-1ubuntu0.1~esm4"},{"binary_name":"libheif-examples","binary_version":"1.6.1-1ubuntu0.1~esm4"},{"binary_name":"libheif1","binary_version":"1.6.1-1ubuntu0.1~esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84384.json"}},{"package":{"name":"libheif","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/libheif?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.11.0-1","1.12.0-2build1","1.12.0-2ubuntu0.1~esm1","1.12.0-2ubuntu0.1~esm2","1.12.0-2ubuntu0.1~esm3","1.12.0-2ubuntu0.1~esm4"],"ecosystem_specific":{"binaries":[{"binary_name":"heif-gdk-pixbuf","binary_version":"1.12.0-2ubuntu0.1~esm4"},{"binary_name":"heif-thumbnailer","binary_version":"1.12.0-2ubuntu0.1~esm4"},{"binary_name":"libheif-examples","binary_version":"1.12.0-2ubuntu0.1~esm4"},{"binary_version":"1.12.0-2ubuntu0.1~esm4","binary_name":"libheif1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84384.json"}},{"package":{"name":"libheif","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libheif?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.16.2-2ubuntu1","1.17.1-1ubuntu2","1.17.1-1ubuntu3","1.17.4-1ubuntu1","1.17.6-1ubuntu1","1.17.6-1ubuntu2","1.17.6-1ubuntu3","1.17.6-1ubuntu4","1.17.6-1ubuntu4.1","1.17.6-1ubuntu4.2","1.17.6-1ubuntu4.3","1.17.6-1ubuntu4.4","1.17.6-1ubuntu4.5","1.17.6-1ubuntu4.6","1.17.6-1ubuntu4.7","1.17.6-1ubuntu4.8"],"ecosystem_specific":{"binaries":[{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"heif-gdk-pixbuf"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"heif-thumbnailer"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif-examples"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif-plugin-aomdec"},{"binary_name":"libheif-plugin-aomenc","binary_version":"1.17.6-1ubuntu4.8"},{"binary_name":"libheif-plugin-dav1d","binary_version":"1.17.6-1ubuntu4.8"},{"binary_name":"libheif-plugin-ffmpegdec","binary_version":"1.17.6-1ubuntu4.8"},{"binary_name":"libheif-plugin-j2kdec","binary_version":"1.17.6-1ubuntu4.8"},{"binary_name":"libheif-plugin-j2kenc","binary_version":"1.17.6-1ubuntu4.8"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif-plugin-jpegdec"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif-plugin-jpegenc"},{"binary_name":"libheif-plugin-libde265","binary_version":"1.17.6-1ubuntu4.8"},{"binary_name":"libheif-plugin-rav1e","binary_version":"1.17.6-1ubuntu4.8"},{"binary_name":"libheif-plugin-svtenc","binary_version":"1.17.6-1ubuntu4.8"},{"binary_name":"libheif-plugin-x265","binary_version":"1.17.6-1ubuntu4.8"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84384.json"}},{"package":{"name":"libheif","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libheif?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.20.2-1","1.20.2-2","1.20.2-2build1","1.20.2-2bu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