CVE-2025-38678netfilter: nf_tables: reject duplicate device on updates
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 before 0521e694d5b80899fba8695881a6349f9bc538cb; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 before 4681960bc0f4f8bcc782cbf2fd205f48ad314dfd; 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 builds before 4ce2a0c3b8497a66cfc25fc7ca3d087258a785d2; 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 builds before 3f358a66a04513311668ea4b40f5064e253d8386; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 before cf23d531a9d496863aa4c5a0e2f71f0a23f3df3c; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 before d7615bde541f16517d6790412da6ec46fa8a4c1f; from 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 before cf5fb87fcdaaaafec55dcc0dc5a9e15ead343973 | CNA record |
linux linux_kernel linux:linux_kernel | from 5.8 before 6.6.117; from 6.7 before 6.12.59; from 6.13 before 6.16.2; 6.17 | NVD |
References
- https://git.kernel.org/stable/c/0521e694d5b80899fba8695881a6349f9bc538cb
- https://git.kernel.org/stable/c/4681960bc0f4f8bcc782cbf2fd205f48ad314dfd
- https://git.kernel.org/stable/c/4ce2a0c3b8497a66cfc25fc7ca3d087258a785d2
- https://git.kernel.org/stable/c/3f358a66a04513311668ea4b40f5064e253d8386patch
- https://git.kernel.org/stable/c/cf23d531a9d496863aa4c5a0e2f71f0a23f3df3cpatch
- https://git.kernel.org/stable/c/d7615bde541f16517d6790412da6ec46fa8a4c1fpatch
- https://git.kernel.org/stable/c/cf5fb87fcdaaaafec55dcc0dc5a9e15ead343973patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.