CVE-2026-103222

Name	CVE-2026-103222
Description	A vulnerability was determined in Blosc C-Blosc2 up to 3.3.2. This impacts the function blosclz_decompress of the file blosc/blosclz.c of the component blosclz Decompression. Executing a manipulation can lead to integer overflow. The attack may be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. Upgrading to version 3.3.3 will fix this issue. This patch is called fe2964d114d97847f56570a0ab2be2c57ccbeedc. The affected component should be upgraded.
Source	CVE (at NVD; CERT, ENISA, 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
c-blosc2 (PTS)	trixie	2.17.1+ds-1	vulnerable
	forky	2.23.1+ds-1	vulnerable
	sid	2.23.1+ds-2	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
c-blosc2	source	(unstable)	(unfixed)

[trixie] - c-blosc2 <no-dsa> (Minor issue)
Fixed by: https://github.com/Blosc/c-blosc2/commit/fe2964d114d97847f56570a0ab2be2c57ccbeedc (v3.3.3)