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netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there is not any protection when iterate over nf_tables_expressions list in __nft_expr_type_get(). Therefore, there is potential data-race of nf_tables_expressions list entry. Use list_for_each_entry_rcu() to iterate over nf_tables_expressions list in __nft_expr_type_get(), and use rcu_read_lock() in the caller nft_expr_type_get() to protect the entire type query process.

Announced Source revision 1
Original source ↗

CVE-2024-27020

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-2024-27020

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": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
        "lessThan": "939109c0a8e2a006a6cc8209e262d25065f4403a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
        "lessThan": "b38a133d37fa421c8447b383d788c9cc6f5cb34c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
        "lessThan": "934e66e231cff2b18faa2c8aad0b8cec13957e05",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
        "lessThan": "0b6de00206adbbfc6373b3ae38d2a6f197987907",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
        "lessThan": "8d56bad42ac4c43c6c72ddd6a654a2628bf839c5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
        "lessThan": "a9ebf340d123ae12582210407f879d6a5a1bc25b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
        "lessThan": "01f1a678b05ade4b1248019c2dcca773aebbeb7f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ef1f7df9170dbd875ce198ba84e6ab80f6fc139e",
        "lessThan": "f969eb84ce482331a991079ab7a5c4dc3b7f89bf",
        "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": "3.13"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.13",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "4.19.313",
        "versionType": "semver",
        "lessThanOrEqual": "4.19.*"
      },
      {
        "status": "unaffected",
        "version": "5.4.275",
        "versionType": "semver",
        "lessThanOrEqual": "5.4.*"
      },
      {
        "status": "unaffected",
        "version": "5.10.216",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.157",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.88",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.29",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.8.8",
        "versionType": "semver",
        "lessThanOrEqual": "6.8.*"
      },
      {
        "status": "unaffected",
        "version": "6.9",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/netfilter/nf_tables_api.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2024-27020

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#26477 · Revision 1
Added to Heist Feed
Publisher date
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