CVE-2026-98320

Name	CVE-2026-98320
Description	In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: hold reference on ct until flow is released nf_ct_put() releases the ct->ext area inmediately, the rcu typesafe semantics also allow to refer to the wrong conntrack from the flowtable datapath. Hold reference on ct until flow is released after rcu grace period. Add rcu_barrier() on module exit path, to ensure pending flow entries are release before module goes away.
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)
References	DLA-4841-1, DLA-4850-1, DSA-6568-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bookworm	6.1.176-1	vulnerable
	bookworm (security)	6.1.190-1	fixed
	trixie	6.12.107-1	vulnerable
	trixie (security)	6.12.113-1	fixed
	forky, sid	7.2.12-1	fixed
linux-6.12 (PTS)	bookworm (security)	6.12.113-1~deb12u1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	bookworm	6.1.190-1	DLA-4841-1
linux	source	trixie	6.12.113-1	DSA-6568-1
linux	source	(unstable)	7.2.8-1
linux-6.12	source	bookworm	6.12.113-1~deb12u1	DLA-4850-1

https://git.kernel.org/linus/e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d (7.3-rc4)