{"id":"UBUNTU-CVE-2026-84449","details":"libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.19.6, Op_RGB24_32_to_YCbCr::convert_colorspace() stores image-plane strides in an integer width that can overflow for extremely large RGB images created through heif_image_create() and heif_image_add_plane(). The resulting wrapped stride causes the conversion loop in libheif/color-conversion/rgb2yuv.cc to compute an invalid input pointer and read beyond the allocated interleaved plane while heif_context_encode_image() performs RGB-to-YCbCr conversion. This can crash the encoding process. This issue is fixed in version 1.19.6.","modified":"2026-09-21T21:40:32.482915234Z","published":"2026-09-21T00:00:00Z","upstream":["CVE-2026-84449"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-84449"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-84449"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/security/advisories/GHSA-2c3g-p585-8rpq"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/commit/e29953da30eb11aa1762df0bff3b36be4b22fbe3"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/releases/tag/v1.19.6"}],"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_name":"libheif1","binary_version":"1.1.0-2ubuntu0.1~esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84449.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_version":"1.6.1-1ubuntu0.1~esm4","binary_name":"heif-thumbnailer"},{"binary_name":"libheif-examples","binary_version":"1.6.1-1ubuntu0.1~esm4"},{"binary_version":"1.6.1-1ubuntu0.1~esm4","binary_name":"libheif1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84449.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_version":"1.12.0-2ubuntu0.1~esm4","binary_name":"heif-gdk-pixbuf"},{"binary_name":"heif-thumbnailer","binary_version":"1.12.0-2ubuntu0.1~esm4"},{"binary_version":"1.12.0-2ubuntu0.1~esm4","binary_name":"libheif-examples"},{"binary_name":"libheif1","binary_version":"1.12.0-2ubuntu0.1~esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84449.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_name":"heif-gdk-pixbuf","binary_version":"1.17.6-1ubuntu4.8"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"heif-thumbnailer"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif-examples"},{"binary_name":"libheif-plugin-aomdec","binary_version":"1.17.6-1ubuntu4.8"},{"binary_name":"libheif-plugin-aomenc","binary_version":"1.17.6-1ubuntu4.8"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif-plugin-dav1d"},{"binary_name":"libheif-plugin-ffmpegdec","binary_version":"1.17.6-1ubuntu4.8"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif-plugin-j2kdec"},{"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_name":"libheif-plugin-jpegenc","binary_version":"1.17.6-1ubuntu4.8"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif-plugin-libde265"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif-plugin-rav1e"},{"binary_name":"libheif-plugin-svtenc","binary_version":"1.17.6-1ubuntu4.8"},{"binary_version":"1.17.6-1ubuntu4.8","binary_name":"libheif-plugin-x265"},{"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-2026-84449.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}