CyberRota Analysis
AI-GeneratedThe vulnerability affects the Linux kernel's netfilter component, specifically the xt_cluster module, which improperly handles template conntracks during hashing operations. This flaw can lead to state confusion, potentially allowing incomplete connection tracking states to be processed, which may compromise network security. Organizations using Linux systems with netfilter should prioritize patching this issue to prevent potential exploitation and ensure robust network integrity.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_cluster: reject template conntracks in hash match xt_cluster_mt() treats any non-NULL nf_ct_get() result as a fully initialized conntrack and passes it to xt_cluster_hash(). This causes a state confusion bug when the raw table CT target attaches a template conntrack to skb->_nfct before normal conntrack processing. Templates carry IPS_TEMPLATE status but do not have a valid tuple for hashing yet, so xt_cluster_hash() can hit its WARN_ON() path on the zeroed l3num field. Reject template conntracks before hashing them. This matches existing netfilter handling for template objects and avoids hashing incomplete conntrack state.