CVE-2025-6856 MEDIUM

CVE-2025-6856: HDF5 H5FL.c H5FL__reg_gc_list use after free

Vendor N/A
Product HDF5
Weakness CWE-416
Published June 29, 2025
Last update June 30, 2025
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 29, 2025 CVE published
June 30, 2025 Record updated