{"id":"UBUNTU-CVE-2026-120208","details":"libheif 1.18.0 before 1.23.3 contains a heap-based buffer overflow vulnerability in unc_decoder_mixed_interleave::processTile() that allows attackers to write out of bounds by supplying chroma components with unequal bit depths. Attackers can craft a HEIF file declaring, for example, 16-bit Cb and 8-bit Cr to trigger file-controlled heap writes past the Cr plane, potentially achieving code execution in image-processing pipelines.","modified":"2026-11-04T03:30:35.869502197Z","published":"2026-11-03T00:00:00Z","upstream":["CVE-2026-120208"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-120208"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-120208"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/security/advisories/GHSA-x8r2-mggj-j6wr"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/blob/v1.23.2/libheif/codecs/uncompressed/unc_decoder_mixed_interleave.cc#L95"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/commit/9d3cd91d7b1c8c68deef6d06057ab956bcb0dfb9"},{"type":"REPORT","url":"https://github.com/strukturag/libheif/releases/tag/v1.23.3"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/libheif-1.18.0-before-1.23.3-heap-buffer-overflow-via-unci-mixed-interleave-decoder"}],"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","1.1.0-2ubuntu0.1~esm5"],"ecosystem_specific":{"binaries":[{"binary_name":"libheif-examples","binary_version":"1.1.0-2ubuntu0.1~esm5"},{"binary_name":"libheif1","binary_version":"1.1.0-2ubuntu0.1~esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120208.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","1.6.1-1ubuntu0.1~esm5"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.1-1ubuntu0.1~esm5","binary_name":"heif-gdk-pixbuf"},{"binary_version":"1.6.1-1ubuntu0.1~esm5","binary_name":"heif-thumbnailer"},{"binary_name":"libheif-examples","binary_version":"1.6.1-1ubuntu0.1~esm5"},{"binary_name":"libheif1","binary_version":"1.6.1-1ubuntu0.1~esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120208.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","1.12.0-2ubuntu0.1~esm5"],"ecosystem_specific":{"binaries":[{"binary_version":"1.12.0-2ubuntu0.1~esm5","binary_name":"heif-gdk-pixbuf"},{"binary_name":"heif-thumbnailer","binary_version":"1.12.0-2ubuntu0.1~esm5"},{"binary_name":"libheif-examples","binary_version":"1.12.0-2ubuntu0.1~esm5"},{"binary_name":"libheif1","binary_version":"1.12.0-2ubuntu0.1~esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120208.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","1.17.6-1ubuntu4.9"],"ecosystem_specific":{"binaries":[{"binary_version":"1.17.6-1ubuntu4.9","binary_name":"heif-gdk-pixbuf"},{"binary_name":"heif-thumbnailer","binary_version":"1.17.6-1ubuntu4.9"},{"binary_name":"libheif-examples","binary_version":"1.17.6-1ubuntu4.9"},{"binary_name":"libheif-plugin-aomdec","binary_version":"1.17.6-1ubuntu4.9"},{"binary_name":"libheif-plugin-aomenc","binary_version":"1.17.6-1ubuntu4.9"},{"binary_name":"libheif-plugin-dav1d","binary_version":"1.17.6-1ubuntu4.9"},{"binary_version":"1.17.6-1ubuntu4.9","binary_name":"libheif-plugin-ffmpegdec"},{"binary_name":"libheif-plugin-j2kdec","binary_version":"1.17.6-1ubuntu4.9"},{"binary_name":"libheif-plugin-j2kenc","binary_version":"1.17.6-1ubuntu4.9"},{"binary_version":"1.17.6-1ubuntu4.9","binary_name":"libheif-plugin-jpegdec"},{"binary_name":"libheif-plugin-jpegenc","binary_version":"1.17.6-1ubuntu4.9"},{"binary_name":"libheif-plugin-libde265","binary_version":"1.17.6-1ubuntu4.9"},{"binary_name":"libheif-plugin-rav1e","binary_version":"1.17.6-1ubuntu4.9"},{"binary_version":"1.17.6-1ubuntu4.9","binary_name":"libheif-plugin-svtenc"},{"binary_name":"libheif-plugin-x265","binary_version":"1.17.6-1ubuntu4.9"},{"binary_name":"libheif1","binary_version":"1.17.6-1ubuntu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