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netfilter: nf_tables: reject duplicate device on updates

Type: advisorySource: Official CVE List1 source record

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

Announced Source revision 1
Original source ↗

CVE-2025-38678

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2025-38678

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981",
        "lessThan": "0521e694d5b80899fba8695881a6349f9bc538cb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981",
        "lessThan": "4681960bc0f4f8bcc782cbf2fd205f48ad314dfd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981",
        "lessThan": "4ce2a0c3b8497a66cfc25fc7ca3d087258a785d2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981",
        "lessThan": "3f358a66a04513311668ea4b40f5064e253d8386",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981",
        "lessThan": "cf23d531a9d496863aa4c5a0e2f71f0a23f3df3c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981",
        "lessThan": "d7615bde541f16517d6790412da6ec46fa8a4c1f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "78d9f48f7f44431a25da2b46b3a8812f6ff2b981",
        "lessThan": "cf5fb87fcdaaaafec55dcc0dc5a9e15ead343973",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/netfilter/nf_tables_api.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.8"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.8",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.247",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.197",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.159",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.117",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.59",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.16.2",
        "versionType": "semver",
        "lessThanOrEqual": "6.16.*"
      },
      {
        "status": "unaffected",
        "version": "6.17",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/netfilter/nf_tables_api.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-38678

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#30609 · Revision 1
Added to Heist Feed
Publisher date
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