CVE-2025-6856 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Hdf5

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-416 — Use After FreeCWE-787 — Out-of-bounds Write7 documents6 sources
Severity
4.8MEDIUMNVD
EPSS
0.0%
top 85.38%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Hdfgroup Hdf5Debian Hdf5Msrc Azl3 Hdf5 1.14.4.3-1 ON Azure Linux 3.0+2 more
Timeline
PublishedJun 29

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.

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

Affected Packages5 packages

▶debiandebian/hdf5
▶NVDhdfgroup/hdf51.14.6

🔴Vulnerability Details

2
GHSA
GHSA-wxfp-rw9f-g4g7: A vulnerability, which was classified as problematic, was found in HDF5 1↗2025-06-29
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OSV
CVE-2025-6856: A vulnerability, which was classified as problematic, was found in HDF5 1↗2025-06-29
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📋Vendor Advisories

4
Red Hat
hdf5: HDF5 Use-After-Free Vulnerability↗2025-06-29
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Microsoft
HDF5 H5FL.c H5FL__reg_gc_list use after free↗2025-06-10
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Debian
CVE-2025-6856: hdf5 - A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. ...↗2025
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Microsoft
The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer overflow when used on systems with the Mesa VM driver. This issue could allow an attacker to perform remote code execution an↗2023-12-12
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