CVE-2025-6856 - CVE House
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Status published Medium CVE-2025-6856

HDF5 H5FL.c H5FL__reg_gc_list use after free

Vulnerability Description

A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5FL__reg_gc_list of the file src/H5FL.c. The manipulation leads to use after free. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • JJLeo (VulDB User)

Affected Vendor

Affected Software

HDF5
Vulnerable Versions:
1.14.6

Timeline

Official Publish: June 29th, 2025
Last Modified: June 30th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

Weaknesses (CWE)