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

Vulnerability from cvelistv5 – Published: 2024-05-01 05:30 – Updated: 2026-05-12 11:51
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)
Create a notification for this product.
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)
Create a notification for this product.
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      "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.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: netfilter: nf_tables: corrige una posible ejecuci\\u00f3n de datos en __nft_expr_type_get() nft_unregister_expr() puede concurrente con __nft_expr_type_get(), y no hay ninguna protecci\\u00f3n cuando se itera sobre la lista nf_tables_expressions en __nft_expr_type_get() . Por lo tanto, existe una posible ejecuci\\u00f3n de datos en la entrada de la lista nf_tables_expressions. Utilice list_for_each_entry_rcu() para iterar sobre la lista nf_tables_expressions en __nft_expr_type_get() y utilice rcu_read_lock() en el llamador nft_expr_type_get() para proteger todo el proceso de consulta de tipos.\"}]",
      "id": "CVE-2024-27020",
      "lastModified": "2024-11-21T09:03:40.660",
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      "published": "2024-05-01T06:15:20.840",
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{\"id\": \"CVE-2024-27020\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-30T19:26:58.391230Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-362\", \"description\": \"CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-14T18:55:36.519Z\"}}], \"cna\": {\"title\": \"netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"ef1f7df9170dbd875ce198ba84e6ab80f6fc139e\", \"lessThan\": 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      "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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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.