Bug 2457034 (CVE-2026-34734) - CVE-2026-34734 hdf5: h5dump: HDF5 h5dump: Arbitrary code execution via a crafted HDF5 file
Summary: CVE-2026-34734 hdf5: h5dump: HDF5 h5dump: Arbitrary code execution via a craf...
Keywords:
Status: NEW
Alias: CVE-2026-34734
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2457186 2457187
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-09 20:02 UTC by OSIDB Bzimport
Modified: 2026-04-09 23:48 UTC (History)
1 user (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-04-09 20:02:15 UTC 
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.
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