Detections
Analytics
CVE-2025-38678
medium
Description
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
References
https://git.kernel.org/stable/c/d7615bde541f16517d6790412da6ec46fa8a4c1f
https://git.kernel.org/stable/c/cf5fb87fcdaaaafec55dcc0dc5a9e15ead343973
https://git.kernel.org/stable/c/cf23d531a9d496863aa4c5a0e2f71f0a23f3df3c
https://git.kernel.org/stable/c/4ce2a0c3b8497a66cfc25fc7ca3d087258a785d2
https://git.kernel.org/stable/c/4681960bc0f4f8bcc782cbf2fd205f48ad314dfd
https://git.kernel.org/stable/c/3f358a66a04513311668ea4b40f5064e253d8386
https://git.kernel.org/stable/c/0521e694d5b80899fba8695881a6349f9bc538cb