CVE-2025-6858

Name	CVE-2025-6858
Description	A vulnerability was found in HDF5 1.14.6 and classified as problematic. Affected by this issue is the function H5C__flush_single_entry of the file src/H5Centry.c. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
hdf5 (PTS)	bullseye	1.10.6+repack-4+deb11u1	vulnerable
	bookworm	1.10.8+repack1-1	vulnerable
	forky, trixie	1.14.5+repack-3	vulnerable
	sid	1.14.5+repack-4	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
hdf5	source	(unstable)	(unfixed)	unimportant

https://github.com/HDFGroup/hdf5/issues/5576
Negligible security impact