CVE-2025-38678

EIP tracks 1 public exploit for CVE-2025-38678. PoCs published by guard-wait.

AI-analyzed exploit summary This PoC exploits CVE-2025-38678, a Linux kernel vulnerability in the nf_tables subsystem, using netlink operations and namespace manipulation to trigger the flaw. The code sets up a user and network namespace, creates veth interfaces, and manipulates netfilter tables to exploit the vulnerability.

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: reject duplicate device on updates A chain/flowtable update with duplicated devices in the same batch is possible. Unfortunately, netdev event path only removes the first device that is found, leaving unregistered the hook of the duplicated device. Check if a duplicated device exists in the transaction batch, bail out with EEXIST in such case. WARNING is hit when unregistering the hook: [49042.221275] WARNING: CPU: 4 PID: 8425 at net/netfilter/core.c:340 nf_hook_entry_head+0xaa/0x150 [49042.221375] CPU: 4 UID: 0 PID: 8425 Comm: nft Tainted: G S 6.16.0+ #170 PREEMPT(full) [...] [49042.221382] RIP: 0010:nf_hook_entry_head+0xaa/0x150