CVE-2026-92823

Name	CVE-2026-92823
Description	A flaw was found in libmodulemd. In builds with rpmio support enabled, compressed modulemd YAML is decompressed through a custom read handler that does not enforce a cumulative decompressed-size limit before parsing. An attacker who can supply a highly compressible compressed YAML file can cause excessive CPU and memory consumption, resulting in a denial of service.
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
libmodulemd (PTS)	bookworm	2.14.0-3	vulnerable
	trixie	2.15.0-1	vulnerable
	forky, sid	2.15.3-1	vulnerable

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

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

[trixie] - libmodulemd <no-dsa> (Minor issue)
[bookworm] - libmodulemd <postponed> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=2478703