CVE-2026-92627 Heap Use-After-Free in H5T__conv_f_f

A heap-use-after-free vulnerability exists in H5Tconvff in src/H5Tconv.c in HDF5 before 1.14.2. When converting a compound datatype containing floating-point members during a dataset read, a temporary buffer allocated with calloc is freed and subsequently read from within the same conversion...

CVE-2026-92627

A heap-use-after-free vulnerability exists in H5T__conv_f_f() in src/H5Tconv.c of HDF5 versions before 1.14.2 . When converting a compound datatype containing floating-point members during a dataset read, a temporary buffer allocated with calloc() is freed and subsequently read from within the sa...

EUVD-2026-80836

A heap-use-after-free vulnerability exists in H5Tconvff in src/H5Tconv.c in HDF5 before 1.14.2. When converting a compound datatype containing floating-point members during a dataset read, a temporary buffer allocated with calloc is freed and subsequently read from within the same conversion...

OSV-2023-1256 Heap-buffer-overflow in H5T__bit_copy

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=64665 Crash type: Heap-buffer-overflow READ 1 Crash state: H5Tbitcopy H5Tbitgetd H5Tconvff...