The vulnerability of the decode_mask_image() function in the libheif/image-items/mask_image.cc file, a decoder and encoder for libheif file formats, allows a hacker to trigger a service failure.

The vulnerability of the decodemaskimage function in the libheif/image-items/maskimage.cc file, a decoder and encoder for libheif file formats, is related to the copying of buffers without checking the size of the input data. Exploiting this vulnerability could allow an attacker to cause service...

CVE-2026-32741 libheif has a heap buffer overflow in decode_mask_image()

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and below contain a heap buffer overflow in MaskImageCodec::decodemaskimage. When decoding a HEIF file containing a mask image mski, the function copies the full iloc extent data into a pixel buffer using memcpydst,...

CVE-2026-32741: Heap-based Buffer Overflow

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and below contain a heap buffer overflow in MaskImageCodec::decodemaskimage. When decoding a HEIF file containing a mask image mski, the function copies the full iloc extent data into a pixel buffer using memcpydst,...

libheif:file_fuzzer: Heap-buffer-overflow in MaskImageCodec::decode_mask_image

Project: https://github.com/strukturag/libheif.git Detailed Report: https://oss-fuzz.com/testcase?key=5211861302181888 Project: libheif Fuzzing Engine: honggfuzz Fuzz Target: filefuzzer Job Type: honggfuzzasanlibheif Platform Id: linux Crash Type: Heap-buffer-overflow WRITE Crash Address:...