CVE-2026-34734 — HDF5: H5T__conv_struct Use After Free
HDF5 is software for managing data. In 1.14.1-2 and earlier, a heap-use-after-free was found in the h5dump helper utility. An attacker who can supply a malicious h5 file can tri…
Published: 2026-04-09 · CVSS: 7.8 · CVSS 3.1
HDF5 is software for managing data. In 1.14.1-2 and earlier, a heap-use-after-free was found in the h5dump helper utility. An attacker who can supply a malicious h5 file can trigger a heap use-after-free. The freed object is referenced in a memmove call from H5T__conv_struct. The original object was allocated by H5D__typeinfo_init_phase3 and freed by H5D__typeinfo_term.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7