CVE-2026-98320 — netfilter: flowtable: hold reference on ct until flow is released
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 inm…
Published: 2026-10-06 · CVSS: 7.8 · CVSS 3.1
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 Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7