CVE-2026-90852

Name	CVE-2026-90852
Description	A vulnerability has been found in luben zstd-jni up to 1.5.7-13. This vulnerability affects the function ZstdCompressCtx.loadDict of the file ZstdCompressCtx.java of the component Dictionary Sharing. Such manipulation leads to use after free. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.7-14 is able to resolve this issue. The name of the patch is a560131d7834598afd9cea6b7c107bc88e915936. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
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
zstd-jni-java (PTS)	bookworm	1.5.2-5+ds-3	vulnerable
	trixie	1.5.2-5+ds-7	vulnerable
	forky, sid	1.5.2-5+ds-8	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
zstd-jni-java	source	(unstable)	(unfixed)

https://github.com/luben/zstd-jni/issues/404
Fixed by: https://github.com/luben/zstd-jni/commit/a560131d7834598afd9cea6b7c107bc88e915936 (1.5.7-14)