CVE-2025-38678 (GCVE-0-2025-38678)

Vulnerability from cvelistv5 – Published: 2025-09-03 13:01 – Updated: 2025-12-06 21:38
VLAI?
Title
netfilter: nf_tables: reject duplicate device on updates
Summary
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
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 , < 0521e694d5b80899fba8695881a6349f9bc538cb (git)
Affected: 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 , < 4681960bc0f4f8bcc782cbf2fd205f48ad314dfd (git)
Affected: 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 , < 4ce2a0c3b8497a66cfc25fc7ca3d087258a785d2 (git)
Affected: 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 , < 3f358a66a04513311668ea4b40f5064e253d8386 (git)
Affected: 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 , < cf23d531a9d496863aa4c5a0e2f71f0a23f3df3c (git)
Affected: 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 , < d7615bde541f16517d6790412da6ec46fa8a4c1f (git)
Affected: 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 , < cf5fb87fcdaaaafec55dcc0dc5a9e15ead343973 (git)
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    Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.247 , ≤ 5.10.* (semver)
Unaffected: 5.15.197 , ≤ 5.15.* (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.59 , ≤ 6.12.* (semver)
Unaffected: 6.16.2 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: reject duplicate device on updates\n\nA chain/flowtable update with duplicated devices in the same batch is\npossible. Unfortunately, netdev event path only removes the first\ndevice that is found, leaving unregistered the hook of the duplicated\ndevice.\n\nCheck if a duplicated device exists in the transaction batch, bail out\nwith EEXIST in such case.\n\nWARNING is hit when unregistering the hook:\n\n [49042.221275] WARNING: CPU: 4 PID: 8425 at net/netfilter/core.c:340 nf_hook_entry_head+0xaa/0x150\n [49042.221375] CPU: 4 UID: 0 PID: 8425 Comm: nft Tainted: G S                  6.16.0+ #170 PREEMPT(full)\n [...]\n [49042.221382] RIP: 0010:nf_hook_entry_head+0xaa/0x150"
        }
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      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        {
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      "title": "netfilter: nf_tables: reject duplicate device on updates",
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    "dateReserved": "2025-04-16T04:51:24.031Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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