Bug 2511845 (CVE-2026-19024) - CVE-2026-19024 hdf5: HDF5: Denial of service via malformed dataset
Summary: CVE-2026-19024 hdf5: HDF5: Denial of service via malformed dataset
Keywords:
Status: NEW
Alias: CVE-2026-19024
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2515360 2515361
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-05 22:41 UTC by OSIDB Bzimport
Modified: 2026-08-13 15:07 UTC (History)
1 user (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-05 22:41:16 UTC 
NULL pointer dereference in H5Pget_fill_value in HDF5 before 2.1.1 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and reaches H5T_path_find with a NULL datatype.
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