CVE-2025-6856
high
CVSS v3
7.8
CVSS v4 NEW
1.9
VIR risk
7.8
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.
Predictions
Exploit likelihood
75%
Patch ETA
โ
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ if you've already worked around this in production โ publish your fix to the community-verified tier.
โ Propose a mitigation on Community โ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | affected | |
| debian | sid | affected | |
| debian | trixie | affected | |
| sles | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| hdfgroup | hdf5 | 1.14.6 | |
References
- https://github.com/HDFGroup/hdf5/issues/5574
- https://github.com/user-attachments/files/20623417/hdf5_crash_6.txt
- https://vuldb.com/?ctiid.314328
- https://vuldb.com/?id.314328
- https://vuldb.com/?submit.602528
- https://security-tracker.debian.org/tracker/CVE-2025-6856
- https://www.suse.com/security/cve/CVE-2025-6856.html
CWEs
CWE-119 CWE-416
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.