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...

kernel: ipv4: Fix uninit-value access in __ip_make_skb()

A flaw was found in the Linux kernel's IPv4 networking subsystem. A local user can cause a Denial of Service DoS by exploiting a race condition when altering socket options while network packets are being constructed. This issue leads to an uninitialized memory read that can crash the system...