CVE-2026-84449

libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.19.6, OpRGB2432toYCbCr::convertcolorspace stores image-plane strides in an integer width that can overflow for extremely large RGB images created through heifimagecreate and heifimageaddplane. The resulting wrapped stride caus...

CVE-2026-84451 libheif: Incomplete fix for CVE-2026-62292 leaves libheif vulnerable to an out-of-bounds read

libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.3, the no-icef full-item branch of uncdecoder::getcompressedimagedatauncompressed in libheif/codecs/uncompressed/uncdecoder.cc retains an addition-based range check that can wrap when a crafted uncompressed tile gr...

CVE-2026-84451

libheif versions 1.19.0 through 1.23.3 contain an out-of-bounds read caused by an incomplete remediation of CVE-2026-62292 . In the no-icef full-item branch of unc_decoder::get_compressed_image_data_uncompressed(), an addition-based range check can wrap around when a crafted uncompressed tile gri...

CVE-2026-84451

libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.3, the no-icef full-item branch of uncdecoder::getcompressedimagedatauncompressed in libheif/codecs/uncompressed/uncdecoder.cc retains an addition-based range check that can wrap when a crafted uncompressed tile gr...

EUVD-2026-83024

libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.3, the no-icef full-item branch of uncdecoder::getcompressedimagedatauncompressed in libheif/codecs/uncompressed/uncdecoder.cc retains an addition-based range check that can wrap when a crafted uncompressed tile gr...

CVE-2026-84451 libheif: Incomplete fix for CVE-2026-62292 leaves libheif vulnerable to an out-of-bounds read

libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.3, the no-icef full-item branch of uncdecoder::getcompressedimagedatauncompressed in libheif/codecs/uncompressed/uncdecoder.cc retains an addition-based range check that can wrap when a crafted uncompressed tile gr...

EUVD-2026-83023

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processedids is copied per branch and ImageItem::decodeimage has no shared operation budget. This vulnerability is fix...

CVE-2026-84447

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processedids is copied per branch and ImageItem::decodeimage has no shared operation budget. This vulnerability is fix...

CVE-2026-84447 libheif: Derived-image indirect reference chains and tiled offsets bypass decode caching and MemoryHandle limits, causing CPU/memory amplification DoS

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processedids is copied per branch and ImageItem::decodeimage has no shared operation budget. This vulnerability is fix...

CVE-2026-84447 libheif: Derived-image indirect reference chains and tiled offsets bypass decode caching and MemoryHandle limits, causing CPU/memory amplification DoS

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processedids is copied per branch and ImageItem::decodeimage has no shared operation budget. This vulnerability is fix...

CVE-2026-84447

libheif (HEIF/AVIF decoder/encoder) versions 1.23.1 and earlier are affected by a CPU/memory amplification denial-of-service vulnerability. Crafted grid , iovl , and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_im...

CVE-2026-84447 libheif: Derived-image indirect reference chains and tiled offsets bypass decode caching and MemoryHandle limits, causing CPU/memory amplification DoS

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processedids is copied per branch and ImageItem::decodeimage has no shared operation budget. This vulnerability is fix...

CVE-2026-84384 libheif: brotli/zlib decompression paths lack output-size limits, allowing decompression-bomb OOM/DoS

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 decompressbrotli and doinflate to grow accumulated output without an effective size limit or MemoryHandle accounting. The brotli path has no outpu...

CVE-2026-84384 libheif: brotli/zlib decompression paths lack output-size limits, allowing decompression-bomb OOM/DoS

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 decompressbrotli and doinflate to grow accumulated output without an effective size limit or MemoryHandle accounting. The brotli path has no outpu...

EUVD-2026-83022

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 decompressbrotli and doinflate to grow accumulated output without an effective size limit or MemoryHandle accounting. The brotli path has no outpu...

CVE-2026-84384

libheif (a HEIF and AVIF file format decoder/encoder) is affected by a decompression-bomb OOM/DoS vulnerability in versions 1.19.0 through 1.23.1 . Crafted HEIF or AVIF files with malicious mime metadata and unci image data cause decompress_brotli() and do_inflate() to grow accumulated output wit...

CVE-2026-84384

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 decompressbrotli and doinflate to grow accumulated output without an effective size limit or MemoryHandle accounting. The brotli path has no outpu...

CVE-2026-84384 libheif: brotli/zlib decompression paths lack output-size limits, allowing decompression-bomb OOM/DoS

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 decompressbrotli and doinflate to grow accumulated output without an effective size limit or MemoryHandle accounting. The brotli path has no outpu...

CVE-2026-84444

libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.23.2, when WITHUNCOMPRESSEDCODEC is enabled, heifcontextaddimagetile accepts an independently constructed tile whose component-plane dimensions do not match the tile geometry established by the prototype image...

CVE-2026-84444

libheif (HEIF/AVIF decoder/encoder) is vulnerable to an out-of-bounds heap write in versions prior to 1.23.2 when the WITH_UNCOMPRESSED_CODEC option is enabled. The root cause is a missing check_component_sizes() gate in unc_encoder::encode_tile(): an independently constructed image tile whose co...