CVE-2024-27012 (GCVE-0-2024-27012)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:29 – Updated: 2026-06-19 11:57
VLAI
Title
netfilter: nf_tables: restore set elements when delete set fails
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: restore set elements when delete set fails From abort path, nft_mapelem_activate() needs to restore refcounters to the original state. Currently, it uses the set->ops->walk() to iterate over these set elements. The existing set iterator skips inactive elements in the next generation, this does not work from the abort path to restore the original state since it has to skip active elements instead (not inactive ones). This patch moves the check for inactive elements to the set iterator callback, then it reverses the logic for the .activate case which needs to skip active elements. Toggle next generation bit for elements when delete set command is invoked and call nft_clear() from .activate (abort) path to restore the next generation bit. The splat below shows an object in mappings memleak: [43929.457523] ------------[ cut here ]------------ [43929.457532] WARNING: CPU: 0 PID: 1139 at include/net/netfilter/nf_tables.h:1237 nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables] [...] [43929.458014] RIP: 0010:nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables] [43929.458076] Code: 83 f8 01 77 ab 49 8d 7c 24 08 e8 37 5e d0 de 49 8b 6c 24 08 48 8d 7d 50 e8 e9 5c d0 de 8b 45 50 8d 50 ff 89 55 50 85 c0 75 86 <0f> 0b eb 82 0f 0b eb b3 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 [43929.458081] RSP: 0018:ffff888140f9f4b0 EFLAGS: 00010246 [43929.458086] RAX: 0000000000000000 RBX: ffff8881434f5288 RCX: dffffc0000000000 [43929.458090] RDX: 00000000ffffffff RSI: ffffffffa26d28a7 RDI: ffff88810ecc9550 [43929.458093] RBP: ffff88810ecc9500 R08: 0000000000000001 R09: ffffed10281f3e8f [43929.458096] R10: 0000000000000003 R11: ffff0000ffff0000 R12: ffff8881434f52a0 [43929.458100] R13: ffff888140f9f5f4 R14: ffff888151c7a800 R15: 0000000000000002 [43929.458103] FS: 00007f0c687c4740(0000) GS:ffff888390800000(0000) knlGS:0000000000000000 [43929.458107] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [43929.458111] CR2: 00007f58dbe5b008 CR3: 0000000123602005 CR4: 00000000001706f0 [43929.458114] Call Trace: [43929.458118] <TASK> [43929.458121] ? __warn+0x9f/0x1a0 [43929.458127] ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables] [43929.458188] ? report_bug+0x1b1/0x1e0 [43929.458196] ? handle_bug+0x3c/0x70 [43929.458200] ? exc_invalid_op+0x17/0x40 [43929.458211] ? nft_setelem_data_deactivate+0xd7/0xf0 [nf_tables] [43929.458271] ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables] [43929.458332] nft_mapelem_deactivate+0x24/0x30 [nf_tables] [43929.458392] nft_rhash_walk+0xdd/0x180 [nf_tables] [43929.458453] ? __pfx_nft_rhash_walk+0x10/0x10 [nf_tables] [43929.458512] ? rb_insert_color+0x2e/0x280 [43929.458520] nft_map_deactivate+0xdc/0x1e0 [nf_tables] [43929.458582] ? __pfx_nft_map_deactivate+0x10/0x10 [nf_tables] [43929.458642] ? __pfx_nft_mapelem_deactivate+0x10/0x10 [nf_tables] [43929.458701] ? __rcu_read_unlock+0x46/0x70 [43929.458709] nft_delset+0xff/0x110 [nf_tables] [43929.458769] nft_flush_table+0x16f/0x460 [nf_tables] [43929.458830] nf_tables_deltable+0x501/0x580 [nf_tables]
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d60be2da67d172aecf866302c91ea11533eca4d9 , < faa0deee272128b95a838fe7c6ebf6a2a426df14 (git)
Affected: 628bd3e49cba1c066228e23d71a852c23e26da73 , < 86658fc7414d4b9e25c2699d751034537503d637 (git)
Affected: 628bd3e49cba1c066228e23d71a852c23e26da73 , < e79b47a8615d42c68aaeb68971593333667382ed (git)
Affected: bc9f791d2593f17e39f87c6e2b3a36549a3705b1 (git)
Affected: 3c7ec098e3b588434a8b07ea9b5b36f04cef1f50 (git)
Affected: a136b7942ad2a50de708f76ea299ccb45ac7a7f9 (git)
Affected: 25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8 (git)
Affected: dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41 (git)
Affected: 6.1.36 , < 6.1.176 (semver)
Affected: 4.19.316 , < 4.20 (semver)
Affected: 5.4.262 , < 5.5 (semver)
Affected: 5.10.188 , < 5.11 (semver)
Affected: 5.15.121 , < 5.16 (semver)
Affected: 6.3.10 , < 6.4 (semver)
Create a notification for this product.
Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (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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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: restore set elements when delete set fails\n\nFrom abort path, nft_mapelem_activate() needs to restore refcounters to\nthe original state. Currently, it uses the set-\u003eops-\u003ewalk() to iterate\nover these set elements. The existing set iterator skips inactive\nelements in the next generation, this does not work from the abort path\nto restore the original state since it has to skip active elements\ninstead (not inactive ones).\n\nThis patch moves the check for inactive elements to the set iterator\ncallback, then it reverses the logic for the .activate case which\nneeds to skip active elements.\n\nToggle next generation bit for elements when delete set command is\ninvoked and call nft_clear() from .activate (abort) path to restore the\nnext generation bit.\n\nThe splat below shows an object in mappings memleak:\n\n[43929.457523] ------------[ cut here ]------------\n[43929.457532] WARNING: CPU: 0 PID: 1139 at include/net/netfilter/nf_tables.h:1237 nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\n[...]\n[43929.458014] RIP: 0010:nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\n[43929.458076] Code: 83 f8 01 77 ab 49 8d 7c 24 08 e8 37 5e d0 de 49 8b 6c 24 08 48 8d 7d 50 e8 e9 5c d0 de 8b 45 50 8d 50 ff 89 55 50 85 c0 75 86 \u003c0f\u003e 0b eb 82 0f 0b eb b3 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90\n[43929.458081] RSP: 0018:ffff888140f9f4b0 EFLAGS: 00010246\n[43929.458086] RAX: 0000000000000000 RBX: ffff8881434f5288 RCX: dffffc0000000000\n[43929.458090] RDX: 00000000ffffffff RSI: ffffffffa26d28a7 RDI: ffff88810ecc9550\n[43929.458093] RBP: ffff88810ecc9500 R08: 0000000000000001 R09: ffffed10281f3e8f\n[43929.458096] R10: 0000000000000003 R11: ffff0000ffff0000 R12: ffff8881434f52a0\n[43929.458100] R13: ffff888140f9f5f4 R14: ffff888151c7a800 R15: 0000000000000002\n[43929.458103] FS:  00007f0c687c4740(0000) GS:ffff888390800000(0000) knlGS:0000000000000000\n[43929.458107] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[43929.458111] CR2: 00007f58dbe5b008 CR3: 0000000123602005 CR4: 00000000001706f0\n[43929.458114] Call Trace:\n[43929.458118]  \u003cTASK\u003e\n[43929.458121]  ? __warn+0x9f/0x1a0\n[43929.458127]  ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\n[43929.458188]  ? report_bug+0x1b1/0x1e0\n[43929.458196]  ? handle_bug+0x3c/0x70\n[43929.458200]  ? exc_invalid_op+0x17/0x40\n[43929.458211]  ? nft_setelem_data_deactivate+0xd7/0xf0 [nf_tables]\n[43929.458271]  ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\n[43929.458332]  nft_mapelem_deactivate+0x24/0x30 [nf_tables]\n[43929.458392]  nft_rhash_walk+0xdd/0x180 [nf_tables]\n[43929.458453]  ? __pfx_nft_rhash_walk+0x10/0x10 [nf_tables]\n[43929.458512]  ? rb_insert_color+0x2e/0x280\n[43929.458520]  nft_map_deactivate+0xdc/0x1e0 [nf_tables]\n[43929.458582]  ? __pfx_nft_map_deactivate+0x10/0x10 [nf_tables]\n[43929.458642]  ? __pfx_nft_mapelem_deactivate+0x10/0x10 [nf_tables]\n[43929.458701]  ? __rcu_read_unlock+0x46/0x70\n[43929.458709]  nft_delset+0xff/0x110 [nf_tables]\n[43929.458769]  nft_flush_table+0x16f/0x460 [nf_tables]\n[43929.458830]  nf_tables_deltable+0x501/0x580 [nf_tables]"
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      "title": "netfilter: nf_tables: restore set elements when delete set fails",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2024-27012",
    "datePublished": "2024-05-01T05:29:37.765Z",
    "dateReserved": "2024-02-19T14:20:24.208Z",
    "dateUpdated": "2026-06-19T11:57:11.794Z",
    "state": "PUBLISHED"
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      "date": "2026-07-22",
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    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-27012\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T06:15:19.743\",\"lastModified\":\"2026-06-19T13:16:19.530\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nf_tables: restore set elements when delete set fails\\n\\nFrom abort path, nft_mapelem_activate() needs to restore refcounters to\\nthe original state. Currently, it uses the set-\u003eops-\u003ewalk() to iterate\\nover these set elements. The existing set iterator skips inactive\\nelements in the next generation, this does not work from the abort path\\nto restore the original state since it has to skip active elements\\ninstead (not inactive ones).\\n\\nThis patch moves the check for inactive elements to the set iterator\\ncallback, then it reverses the logic for the .activate case which\\nneeds to skip active elements.\\n\\nToggle next generation bit for elements when delete set command is\\ninvoked and call nft_clear() from .activate (abort) path to restore the\\nnext generation bit.\\n\\nThe splat below shows an object in mappings memleak:\\n\\n[43929.457523] ------------[ cut here ]------------\\n[43929.457532] WARNING: CPU: 0 PID: 1139 at include/net/netfilter/nf_tables.h:1237 nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\\n[...]\\n[43929.458014] RIP: 0010:nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\\n[43929.458076] Code: 83 f8 01 77 ab 49 8d 7c 24 08 e8 37 5e d0 de 49 8b 6c 24 08 48 8d 7d 50 e8 e9 5c d0 de 8b 45 50 8d 50 ff 89 55 50 85 c0 75 86 \u003c0f\u003e 0b eb 82 0f 0b eb b3 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90\\n[43929.458081] RSP: 0018:ffff888140f9f4b0 EFLAGS: 00010246\\n[43929.458086] RAX: 0000000000000000 RBX: ffff8881434f5288 RCX: dffffc0000000000\\n[43929.458090] RDX: 00000000ffffffff RSI: ffffffffa26d28a7 RDI: ffff88810ecc9550\\n[43929.458093] RBP: ffff88810ecc9500 R08: 0000000000000001 R09: ffffed10281f3e8f\\n[43929.458096] R10: 0000000000000003 R11: ffff0000ffff0000 R12: ffff8881434f52a0\\n[43929.458100] R13: ffff888140f9f5f4 R14: ffff888151c7a800 R15: 0000000000000002\\n[43929.458103] FS:  00007f0c687c4740(0000) GS:ffff888390800000(0000) knlGS:0000000000000000\\n[43929.458107] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n[43929.458111] CR2: 00007f58dbe5b008 CR3: 0000000123602005 CR4: 00000000001706f0\\n[43929.458114] Call Trace:\\n[43929.458118]  \u003cTASK\u003e\\n[43929.458121]  ? __warn+0x9f/0x1a0\\n[43929.458127]  ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\\n[43929.458188]  ? report_bug+0x1b1/0x1e0\\n[43929.458196]  ? handle_bug+0x3c/0x70\\n[43929.458200]  ? exc_invalid_op+0x17/0x40\\n[43929.458211]  ? nft_setelem_data_deactivate+0xd7/0xf0 [nf_tables]\\n[43929.458271]  ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\\n[43929.458332]  nft_mapelem_deactivate+0x24/0x30 [nf_tables]\\n[43929.458392]  nft_rhash_walk+0xdd/0x180 [nf_tables]\\n[43929.458453]  ? __pfx_nft_rhash_walk+0x10/0x10 [nf_tables]\\n[43929.458512]  ? rb_insert_color+0x2e/0x280\\n[43929.458520]  nft_map_deactivate+0xdc/0x1e0 [nf_tables]\\n[43929.458582]  ? __pfx_nft_map_deactivate+0x10/0x10 [nf_tables]\\n[43929.458642]  ? __pfx_nft_mapelem_deactivate+0x10/0x10 [nf_tables]\\n[43929.458701]  ? __rcu_read_unlock+0x46/0x70\\n[43929.458709]  nft_delset+0xff/0x110 [nf_tables]\\n[43929.458769]  nft_flush_table+0x16f/0x460 [nf_tables]\\n[43929.458830]  nf_tables_deltable+0x501/0x580 [nf_tables]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: netfilter: nf_tables: restaurar elementos del conjunto cuando falla la eliminaci\u00f3n del conjunto Desde la ruta de cancelaci\u00f3n, nft_mapelem_activate() necesita restaurar los contadores de referencia al estado original. Actualmente, utiliza set-\u0026gt;ops-\u0026gt;walk() para iterar sobre estos elementos del conjunto. El iterador de conjunto existente omite elementos inactivos en la pr\u00f3xima generaci\u00f3n; esto no funciona desde la ruta de cancelaci\u00f3n para restaurar el estado original ya que tiene que omitir elementos activos (no inactivos). Este parche mueve la verificaci\u00f3n de elementos inactivos a la devoluci\u00f3n de llamada del iterador establecido, luego invierte la l\u00f3gica para el caso .activate que necesita omitir elementos activos. Cambie el bit de pr\u00f3xima generaci\u00f3n para los elementos cuando se invoque el comando eliminar conjunto y llame a nft_clear() desde la ruta .activate (abortar) para restaurar el bit de pr\u00f3xima generaci\u00f3n. El siguiente s\u00edmbolo muestra un objeto en asignaciones memleak: [43929.457523] ------------[ cortar aqu\u00ed ]------------ [43929.457532] ADVERTENCIA: CPU: 0 PID : 1139 en include/net/netfilter/nf_tables.h:1237 nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables] [...] [43929.458014] RIP: 0010:nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables] ] C\u00f3digo: 83 f8 01 77 ab 49 8d 7c 24 08 e8 37 5e d0 de 49 8b 6c 24 08 48 8d 7d 50 e8 e9 5c d0 de 8b 45 50 8d 50 ff 89 55 50 85 c0 75 86 \u0026lt;0f\u0026gt; 0b eb 82 0f 0b eb b3 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 [43929.458081] RSP: 0018:ffff888140f9f4b0 EFLAGS: 00010246 [43929.458086] RAX: 000000000000000 0 RBX: ffff8881434f5288 RCX: dffffc0000000000 [43929.458090] RDX: 00000000ffffffff RSI: ffffffffa26d28a7 RDI: ffff88810ecc9550 [43929.458093 ] RBP: ffff88810ecc9500 R08: 0000000000000001 R09: ffffed10281f3e8f [43929.458096] R10: 00000000000000003 R11: ffff0000ffff0000 R12: 4f52a0 [43929.458100] R13: ffff888140f9f5f4 R14: ffff888151c7a800 R15: 0000000000000002 [43929.458103] FS: 00007f0c687c4740(0000) 88390800000(0000) knlGS :0000000000000000 [43929.458107] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [43929.458111] CR2: 00007f58dbe5b008 CR3: 00000001236020 05 CR4: 00000000001706f0 [43929.458114] Seguimiento de llamadas: [43929.458118]  [43929.458121] ? __advertir+0x9f/0x1a0 [43929.458127] ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables] [43929.458188] ? report_bug+0x1b1/0x1e0 [43929.458196] ? handle_bug+0x3c/0x70 [43929.458200] ? exc_invalid_op+0x17/0x40 [43929.458211] ? nft_setelem_data_deactivate+0xd7/0xf0 [nf_tables] [43929.458271] ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables] [43929.458332] nft_mapelem_deactivate+0x24/0x30 [nf_tables] [43929.458392] nft_rhash_walk+0xdd/0x180 [nf_tables] 53] ? __pfx_nft_rhash_walk+0x10/0x10 [nf_tables] [43929.458512] ? rb_insert_color+0x2e/0x280 [43929.458520] nft_map_deactivate+0xdc/0x1e0 [nf_tables] [43929.458582] ? __pfx_nft_map_deactivate+0x10/0x10 [nf_tables] [43929.458642] ? __pfx_nft_mapelem_deactivate+0x10/0x10 [nf_tables] [43929.458701] ? __rcu_read_unlock+0x46/0x70 [43929.458709] nft_delset+0xff/0x110 [nf_tables] [43929.458769] nft_flush_table+0x16f/0x460 [nf_tables] [43929.458830] 501/0x580 [nf_tables]\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/netfilter/nf_tables_api.c\",\"net/netfilter/nft_set_bitmap.c\",\"net/netfilter/nft_set_hash.c\",\"net/netfilter/nft_set_pipapo.c\",\"net/netfilter/nft_set_rbtree.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"d60be2da67d172aecf866302c91ea11533eca4d9\",\"lessThan\":\"faa0deee272128b95a838fe7c6ebf6a2a426df14\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"628bd3e49cba1c066228e23d71a852c23e26da73\",\"lessThan\":\"86658fc7414d4b9e25c2699d751034537503d637\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"628bd3e49cba1c066228e23d71a852c23e26da73\",\"lessThan\":\"e79b47a8615d42c68aaeb68971593333667382ed\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"bc9f791d2593f17e39f87c6e2b3a36549a3705b1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3c7ec098e3b588434a8b07ea9b5b36f04cef1f50\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a136b7942ad2a50de708f76ea299ccb45ac7a7f9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6.1.36\",\"lessThan\":\"6.1.176\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.19.316\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.4.262\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.10.188\",\"lessThan\":\"5.11\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.121\",\"lessThan\":\"5.16\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.3.10\",\"lessThan\":\"6.4\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/netfilter/nf_tables_api.c\",\"net/netfilter/nft_set_bitmap.c\",\"net/netfilter/nft_set_hash.c\",\"net/netfilter/nft_set_pipapo.c\",\"net/netfilter/nft_set_rbtree.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.4\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.4\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.176\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8.8\",\"lessThanOrEqual\":\"6.8.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-06-14T18:56:10.473492Z\",\"id\":\"CVE-2024-27012\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T06:59:42+00:00",
      "cve": "CVE-2024-27012",
      "id": "CVE-2024-27012",
      "initial_release_date": "2024-05-01T00:00:00+00:00",
      "product_status:fixed": "559",
      "product_status:known_affected": "50",
      "product_status:known_not_affected": "146",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfilter: nf_tables: restore set elements when delete set fails",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-27012.json",
      "version": "3"
    },
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\"content\": {\"id\": \"CVE-2024-27012\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-14T18:56:10.473492Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-14T18:56:15.272Z\"}}], \"cna\": {\"title\": \"netfilter: nf_tables: restore set elements when delete set fails\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d60be2da67d172aecf866302c91ea11533eca4d9\", \"lessThan\": \"faa0deee272128b95a838fe7c6ebf6a2a426df14\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"628bd3e49cba1c066228e23d71a852c23e26da73\", \"lessThan\": \"86658fc7414d4b9e25c2699d751034537503d637\", \"versionType\": 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\"version\": \"5.4.262\", \"lessThan\": \"5.5\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.10.188\", \"lessThan\": \"5.11\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.15.121\", \"lessThan\": \"5.16\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.3.10\", \"lessThan\": \"6.4\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/netfilter/nf_tables_api.c\", \"net/netfilter/nft_set_bitmap.c\", \"net/netfilter/nft_set_hash.c\", \"net/netfilter/nft_set_pipapo.c\", \"net/netfilter/nft_set_rbtree.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.176\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"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\", \"net/netfilter/nft_set_bitmap.c\", \"net/netfilter/nft_set_hash.c\", \"net/netfilter/nft_set_pipapo.c\", \"net/netfilter/nft_set_rbtree.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/faa0deee272128b95a838fe7c6ebf6a2a426df14\"}, {\"url\": \"https://git.kernel.org/stable/c/86658fc7414d4b9e25c2699d751034537503d637\"}, {\"url\": \"https://git.kernel.org/stable/c/e79b47a8615d42c68aaeb68971593333667382ed\"}], \"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: restore set elements when delete set fails\\n\\nFrom abort path, nft_mapelem_activate() needs to restore refcounters to\\nthe original state. Currently, it uses the set-\u003eops-\u003ewalk() to iterate\\nover these set elements. The existing set iterator skips inactive\\nelements in the next generation, this does not work from the abort path\\nto restore the original state since it has to skip active elements\\ninstead (not inactive ones).\\n\\nThis patch moves the check for inactive elements to the set iterator\\ncallback, then it reverses the logic for the .activate case which\\nneeds to skip active elements.\\n\\nToggle next generation bit for elements when delete set command is\\ninvoked and call nft_clear() from .activate (abort) path to restore the\\nnext generation bit.\\n\\nThe splat below shows an object in mappings memleak:\\n\\n[43929.457523] ------------[ cut here ]------------\\n[43929.457532] WARNING: CPU: 0 PID: 1139 at include/net/netfilter/nf_tables.h:1237 nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\\n[...]\\n[43929.458014] RIP: 0010:nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\\n[43929.458076] Code: 83 f8 01 77 ab 49 8d 7c 24 08 e8 37 5e d0 de 49 8b 6c 24 08 48 8d 7d 50 e8 e9 5c d0 de 8b 45 50 8d 50 ff 89 55 50 85 c0 75 86 \u003c0f\u003e 0b eb 82 0f 0b eb b3 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90\\n[43929.458081] RSP: 0018:ffff888140f9f4b0 EFLAGS: 00010246\\n[43929.458086] RAX: 0000000000000000 RBX: ffff8881434f5288 RCX: dffffc0000000000\\n[43929.458090] RDX: 00000000ffffffff RSI: ffffffffa26d28a7 RDI: ffff88810ecc9550\\n[43929.458093] RBP: ffff88810ecc9500 R08: 0000000000000001 R09: ffffed10281f3e8f\\n[43929.458096] R10: 0000000000000003 R11: ffff0000ffff0000 R12: ffff8881434f52a0\\n[43929.458100] R13: ffff888140f9f5f4 R14: ffff888151c7a800 R15: 0000000000000002\\n[43929.458103] FS:  00007f0c687c4740(0000) GS:ffff888390800000(0000) knlGS:0000000000000000\\n[43929.458107] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n[43929.458111] CR2: 00007f58dbe5b008 CR3: 0000000123602005 CR4: 00000000001706f0\\n[43929.458114] Call Trace:\\n[43929.458118]  \u003cTASK\u003e\\n[43929.458121]  ? __warn+0x9f/0x1a0\\n[43929.458127]  ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\\n[43929.458188]  ? report_bug+0x1b1/0x1e0\\n[43929.458196]  ? handle_bug+0x3c/0x70\\n[43929.458200]  ? exc_invalid_op+0x17/0x40\\n[43929.458211]  ? nft_setelem_data_deactivate+0xd7/0xf0 [nf_tables]\\n[43929.458271]  ? nft_setelem_data_deactivate+0xe4/0xf0 [nf_tables]\\n[43929.458332]  nft_mapelem_deactivate+0x24/0x30 [nf_tables]\\n[43929.458392]  nft_rhash_walk+0xdd/0x180 [nf_tables]\\n[43929.458453]  ? __pfx_nft_rhash_walk+0x10/0x10 [nf_tables]\\n[43929.458512]  ? rb_insert_color+0x2e/0x280\\n[43929.458520]  nft_map_deactivate+0xdc/0x1e0 [nf_tables]\\n[43929.458582]  ? __pfx_nft_map_deactivate+0x10/0x10 [nf_tables]\\n[43929.458642]  ? __pfx_nft_mapelem_deactivate+0x10/0x10 [nf_tables]\\n[43929.458701]  ? __rcu_read_unlock+0x46/0x70\\n[43929.458709]  nft_delset+0xff/0x110 [nf_tables]\\n[43929.458769]  nft_flush_table+0x16f/0x460 [nf_tables]\\n[43929.458830]  nf_tables_deltable+0x501/0x580 [nf_tables]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.176\", \"versionStartIncluding\": \"6.1.36\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.8\", \"versionStartIncluding\": \"6.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"6.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.19.316\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.4.262\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.10.188\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.15.121\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.3.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-06-19T11:57:11.794Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-27012\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-19T11:57:11.794Z\", \"dateReserved\": \"2024-02-19T14:20:24.208Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T05:29:37.765Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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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.