CVE-2025-38678
mediumpriority · track · 32EPSS 0.003 · 20 %ileexploit · PoCDEEURUUSEPSS · scored 2026-10-26
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.4–7.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- guard-wait/CVE-2025-38678_POCmaybe the first poc for CVE-2025-38678?PoC · poc_in_github
affected products (52)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2025-1965Linux Kernel: Schwachstelle ermöglicht Denial of ServiceDeutsch2025-09-03csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (17)
External citations — patches, advisories, analysis.
- https://git.kernel.org/stable/c/cf5fb87fcdaaaafec55dcc0dc5a9e15ead343973cnnvd
- https://git.kernel.org/stable/c/d7615bde541f16517d6790412da6ec46fa8a4c1fcnnvd
- https://www.kernel.org/Patchcnnvd
- https://git.kernel.org/stable/c/0521e694d5b80899fba8695881a6349f9bc538cbenisa_euvd
- https://git.kernel.org/stable/c/3f358a66a04513311668ea4b40f5064e253d8386enisa_euvd
- https://git.kernel.org/stable/c/4681960bc0f4f8bcc782cbf2fd205f48ad314dfdenisa_euvd
- https://git.kernel.org/stable/c/4ce2a0c3b8497a66cfc25fc7ca3d087258a785d2enisa_euvd
- https://git.kernel.org/stable/c/cf23d531a9d496863aa4c5a0e2f71f0a23f3df3cenisa_euvd
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