5.5

CVE-2025-38678

netfilter: nf_tables: reject duplicate device on updates

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
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.8 < 6.6.117
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.59
Linux ≫ Linux Kernel Version >= 6.13 < 6.16.2
Linux ≫ Linux Kernel Version6.17 Updaterc1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.101
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/d7615bde541f16517d6790412da6ec46fa8a4c1f
Patch
https://git.kernel.org/stable/c/cf5fb87fcdaaaafec55dcc0dc5a9e15ead343973
Patch
https://git.kernel.org/stable/c/3f358a66a04513311668ea4b40f5064e253d8386
Patch
https://git.kernel.org/stable/c/cf23d531a9d496863aa4c5a0e2f71f0a23f3df3c
Patch
https://git.kernel.org/stable/c/0521e694d5b80899fba8695881a6349f9bc538cb
https://git.kernel.org/stable/c/4681960bc0f4f8bcc782cbf2fd205f48ad314dfd
https://git.kernel.org/stable/c/4ce2a0c3b8497a66cfc25fc7ca3d087258a785d2