CVE-2025-21959 netfilter: nf_conncount: Fully initialize struct nf_conncount_tuple in insert_tree()

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfconncount: Fully initialize struct nfconncounttuple in inserttree Since commit b36e4523d4d5 "netfilter: nfconncount: fix garbage collection confirm race", cpu and jiffies32 were introduced to the struct...

CVE-2025-21959

CVE-2025-21959 affects the Linux kernel nf_conncount under netfilter. The vulnerability stems from incomplete initialization of nf_conncount_tuple in the insert_tree path: cpu and jiffies32 fields are initialized during nf_conncount_add() but not in the corresponding insert_tree() allocation, aft...