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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."}],"providerMetadata":{"dateUpdated":"2026-05-11T20:08:51.842Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}],"title":"netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2024-27020","datePublished":"2024-05-01T05:30:15.908Z","dateReserved":"2024-02-19T14:20:24.209Z","dateUpdated":"2026-05-12T11:51:12.204Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2024-05-01 06:15:20","lastModifiedDate":"2026-05-12 12:16:29","problem_types":["CWE-362","CWE-362 CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race 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nf_tables: Fix potential data-race in __nft_expr_type","CVE":"CVE-2024-27020","Year":"2024"},"notes":[{"CveYear":"2024","CveId":"27020","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"netfilter: nf_tables: Fix potential data-race in __nft_expr_type"}]}}}