CVE-2024-27020 (GCVE-0-2024-27020)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:30 – Updated: 2025-11-04 17:17
VLAI?
Title
netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get()
Summary
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.
Severity ?
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ef1f7df9170dbd875ce198ba84e6ab80f6fc139e , < 939109c0a8e2a006a6cc8209e262d25065f4403a (git)
Affected: ef1f7df9170dbd875ce198ba84e6ab80f6fc139e , < b38a133d37fa421c8447b383d788c9cc6f5cb34c (git)
Affected: ef1f7df9170dbd875ce198ba84e6ab80f6fc139e , < 934e66e231cff2b18faa2c8aad0b8cec13957e05 (git)
Affected: ef1f7df9170dbd875ce198ba84e6ab80f6fc139e , < 0b6de00206adbbfc6373b3ae38d2a6f197987907 (git)
Affected: ef1f7df9170dbd875ce198ba84e6ab80f6fc139e , < 8d56bad42ac4c43c6c72ddd6a654a2628bf839c5 (git)
Affected: ef1f7df9170dbd875ce198ba84e6ab80f6fc139e , < a9ebf340d123ae12582210407f879d6a5a1bc25b (git)
Affected: ef1f7df9170dbd875ce198ba84e6ab80f6fc139e , < 01f1a678b05ade4b1248019c2dcca773aebbeb7f (git)
Affected: ef1f7df9170dbd875ce198ba84e6ab80f6fc139e , < f969eb84ce482331a991079ab7a5c4dc3b7f89bf (git)
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    Linux Linux Affected: 3.13
Unaffected: 0 , < 3.13 (semver)
Unaffected: 4.19.313 , ≤ 4.19.* (semver)
Unaffected: 5.4.275 , ≤ 5.4.* (semver)
Unaffected: 5.10.216 , ≤ 5.10.* (semver)
Unaffected: 5.15.157 , ≤ 5.15.* (semver)
Unaffected: 6.1.88 , ≤ 6.1.* (semver)
Unaffected: 6.6.29 , ≤ 6.6.* (semver)
Unaffected: 6.8.8 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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\"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\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/939109c0a8e2a006a6cc8209e262d25065f4403a\"}, {\"url\": \"https://git.kernel.org/stable/c/b38a133d37fa421c8447b383d788c9cc6f5cb34c\"}, {\"url\": \"https://git.kernel.org/stable/c/934e66e231cff2b18faa2c8aad0b8cec13957e05\"}, {\"url\": \"https://git.kernel.org/stable/c/0b6de00206adbbfc6373b3ae38d2a6f197987907\"}, {\"url\": \"https://git.kernel.org/stable/c/8d56bad42ac4c43c6c72ddd6a654a2628bf839c5\"}, {\"url\": \"https://git.kernel.org/stable/c/a9ebf340d123ae12582210407f879d6a5a1bc25b\"}, {\"url\": \"https://git.kernel.org/stable/c/01f1a678b05ade4b1248019c2dcca773aebbeb7f\"}, {\"url\": \"https://git.kernel.org/stable/c/f969eb84ce482331a991079ab7a5c4dc3b7f89bf\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nf_tables: Fix potential data-race in __nft_expr_type_get()\\n\\nnft_unregister_expr() can concurrent with __nft_expr_type_get(),\\nand there is not any protection when iterate over nf_tables_expressions\\nlist in __nft_expr_type_get(). Therefore, there is potential data-race\\nof nf_tables_expressions list entry.\\n\\nUse list_for_each_entry_rcu() to iterate over nf_tables_expressions\\nlist in __nft_expr_type_get(), and use rcu_read_lock() in the caller\\nnft_expr_type_get() to protect the entire type query process.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.313\", \"versionStartIncluding\": \"3.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.275\", \"versionStartIncluding\": \"3.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.216\", \"versionStartIncluding\": \"3.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.157\", \"versionStartIncluding\": \"3.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.88\", \"versionStartIncluding\": \"3.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.29\", \"versionStartIncluding\": \"3.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.8\", \"versionStartIncluding\": \"3.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"3.13\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:02:25.729Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-27020\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:02:25.729Z\", \"dateReserved\": \"2024-02-19T14:20:24.209Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T05:30:15.908Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.