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netfilter: nf_tables: add hook transactions for device deletions

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: add hook transactions for device deletions Restore the flag that indicates that the hook is going away, ie. NFT_HOOK_REMOVE, but add a new transaction object to track deletion of hooks without altering the basechain/flowtable hook_list during the preparation phase. The existing approach that moves the hook from the basechain/flowtable hook_list to transaction hook_list breaks netlink dump path readers of this RCU-protected list. It should be possible use an array for nft_trans_hook to store the deleted hooks to compact the representation but I am not expecting many hook object, specially now that wildcard support for devices is in place. Note that the nft_trans_chain_hooks() list contains a list of struct nft_trans_hook objects for DELCHAIN and DELFLOWTABLE commands, while this list stores struct nft_hook objects for NEWCHAIN and NEWFLOWTABLE. Note that new commands can be updated to use nft_trans_hook for consistency. This patch also adapts the event notification path to deal with the list of hook transactions.

Announced Source revision 1
Original source ↗

CVE-2026-63858

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-2026-63858

Linux

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

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
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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": "b6d9014a3335194590abdd2a2471ef5147a67645",
        "lessThan": "768daa9f4276be4007e88dea61a378c8582ba008",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b6d9014a3335194590abdd2a2471ef5147a67645",
        "lessThan": "4e69bfb32b2db323d9205fdb30e284481b37817c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "b6d9014a3335194590abdd2a2471ef5147a67645",
        "lessThan": "10f79dbd7719d1da9f5884d13060322d8729f091",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a248f9c74f9f62799718c12efd9e9e391d60b6f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f275989ad04159dbfc62cefb65ba9c5ba1d7c34f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "62d91062058b42bf70b2c3446aec397bb0ce15ee",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "99180dec5ae582227219d1fdd0dd5ccf53ec7491",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5.10.122",
        "lessThan": "5.11",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.15.47",
        "lessThan": "5.16",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.17.15",
        "lessThan": "5.18",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.18.4",
        "lessThan": "5.19",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "include/net/netfilter/nf_tables.h",
      "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": "5.19"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.19",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.18.57",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.10",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "include/net/netfilter/nf_tables.h",
      "net/netfilter/nf_tables_api.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-63858

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40863 · Revision 1
Added to Heist Feed
Publisher date
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