CVE-2025-2913 HDF5 H5FL.c H5FL__blk_gc_list use after free

Api.Msrc.Microsoft • December 16, 2025

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Multiple HDF5 Vulnerabilities Identified: CVE-2025-6856 and CVE-2025-2913 Two vulnerabilities in the HDF5 library have been identified, CVE-2025-6856 and CVE-2025-2913, both related to use-after-free issues in the H5FL.c file. These vulnerabilities could potentially affect systems utilizing the HDF5 library, which is widely used for managing large datasets. 2 sources 41

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