CVE-2025-38678High· 7.8▾ MidnightPoC availableIn 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 pa…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 42.9 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.3%
1 GitHub repo (last check)
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
Linux >= 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 < 0521e694d5b80899fba8695881a6349f9bc538cbLinux >= 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 < 4681960bc0f4f8bcc782cbf2fd205f48ad314dfdLinux >= 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 < 4ce2a0c3b8497a66cfc25fc7ca3d087258a785d2Linux >= 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 < 3f358a66a04513311668ea4b40f5064e253d8386Linux >= 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 < cf23d531a9d496863aa4c5a0e2f71f0a23f3df3cLinux >= 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 < d7615bde541f16517d6790412da6ec46fa8a4c1fLinux >= 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 < cf5fb87fcdaaaafec55dcc0dc5a9e15ead343973Linux 5.8Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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