23 Oct 2026 15:48:27 UTC
Heap Use-After-Free in H5T__conv_f_f
cve-program · CVE-2026-92627 · Published
CVE-2026-92627
Heap Use-After-Free in H5T__conv_f_f
CVSS 4.0 4.6 MEDIUMCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-92627
PublishedA heap-use-after-free vulnerability exists in H5T__conv_f_f() 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 routine. An attacker who can supply a crafted HDF5 file containing a specially constructed compound datatype can trigger the use-after-free when the file is parsed by an application that reads the affected dataset, such as h5dump. This can result in a crash and, depending on heap layout and allocator behavior, may be exploitable for further memory corruption up to remote code execution.
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