CVE-2024-41042 (GCVE-0-2024-41042)

Vulnerability from cvelistv5 – Published: 2024-07-29 14:31 – Updated: 2026-05-11 20:25
VLAI
Title
netfilter: nf_tables: prefer nft_chain_validate
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: prefer nft_chain_validate nft_chain_validate already performs loop detection because a cycle will result in a call stack overflow (ctx->level >= NFT_JUMP_STACK_SIZE). It also follows maps via ->validate callback in nft_lookup, so there appears no reason to iterate the maps again. nf_tables_check_loops() and all its helper functions can be removed. This improves ruleset load time significantly, from 23s down to 12s. This also fixes a crash bug. Old loop detection code can result in unbounded recursion: BUG: TASK stack guard page was hit at .... Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN CPU: 4 PID: 1539 Comm: nft Not tainted 6.10.0-rc5+ #1 [..] with a suitable ruleset during validation of register stores. I can't see any actual reason to attempt to check for this from nft_validate_register_store(), at this point the transaction is still in progress, so we don't have a full picture of the rule graph. For nf-next it might make sense to either remove it or make this depend on table->validate_state in case we could catch an error earlier (for improved error reporting to userspace).
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 20a69341f2d00cd042e81c82289fba8a13c05a25 , < 1947e4c3346faa8ac7e343652c0fd3b3e394202f (git)
Affected: 20a69341f2d00cd042e81c82289fba8a13c05a25 , < cd4348e0a50286282c314ad6d2b0740e7c812c24 (git)
Affected: 20a69341f2d00cd042e81c82289fba8a13c05a25 , < 31c35f9f89ef585f1edb53e17ac73a0ca4a9712b (git)
Affected: 20a69341f2d00cd042e81c82289fba8a13c05a25 , < 8246b7466c8da49d0d9e85e26cbd69dd6d3e3d1e (git)
Affected: 20a69341f2d00cd042e81c82289fba8a13c05a25 , < b6b6e430470e1c3c5513311cb35a15a205595abe (git)
Affected: 20a69341f2d00cd042e81c82289fba8a13c05a25 , < 717c91c6ed73e248de6a15bc53adefb81446c9d0 (git)
Affected: 20a69341f2d00cd042e81c82289fba8a13c05a25 , < 9df785aeb7dcc8efd1d4110bb27d26005298ebae (git)
Affected: 20a69341f2d00cd042e81c82289fba8a13c05a25 , < cff3bd012a9512ac5ed858d38e6ed65f6391008c (git)
Create a notification for this product.
Linux Linux Affected: 3.13
Unaffected: 0 , < 3.13 (semver)
Unaffected: 4.19.320 , ≤ 4.19.* (semver)
Unaffected: 5.4.282 , ≤ 5.4.* (semver)
Unaffected: 5.10.224 , ≤ 5.10.* (semver)
Unaffected: 5.15.165 , ≤ 5.15.* (semver)
Unaffected: 6.1.105 , ≤ 6.1.* (semver)
Unaffected: 6.6.46 , ≤ 6.6.* (semver)
Unaffected: 6.9.10 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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Old loop detection code can result in\\nunbounded recursion:\\n\\nBUG: TASK stack guard page was hit at ....\\nOops: stack guard page: 0000 [#1] PREEMPT SMP KASAN\\nCPU: 4 PID: 1539 Comm: nft Not tainted 6.10.0-rc5+ #1\\n[..]\\n\\nwith a suitable ruleset during validation of register stores.\\n\\nI can\u0027t see any actual reason to attempt to check for this from\\nnft_validate_register_store(), at this point the transaction is still in\\nprogress, so we don\u0027t have a full picture of the rule graph.\\n\\nFor nf-next it might make sense to either remove it or make this depend\\non table-\u003evalidate_state in case we could catch an error earlier\\n(for improved error reporting to userspace).\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: netfilter: nf_tables: prefiere nft_chain_validate nft_chain_validate ya realiza detecci\u00f3n de bucle porque un ciclo resultar\u00e1 en un desbordamiento de la pila de llamadas (ctx-\u0026gt;level \u0026gt;= NFT_JUMP_STACK_SIZE). Tambi\u00e9n sigue los mapas a trav\u00e9s de -\u0026gt;validate callback en nft_lookup, por lo que no parece haber raz\u00f3n para iterar los mapas nuevamente. nf_tables_check_loops() y todas sus funciones auxiliares se pueden eliminar. Esto mejora significativamente el tiempo de carga del conjunto de reglas, de 23 a 12 segundos. Esto tambi\u00e9n corrige un error de bloqueo. El c\u00f3digo de detecci\u00f3n de bucle antiguo puede provocar una recursividad ilimitada: ERROR: La p\u00e1gina de protecci\u00f3n de pila de TAREA fue visitada en... Vaya: p\u00e1gina de protecci\u00f3n de pila: 0000 [#1] PREEMPT SMP KASAN CPU: 4 PID: 1539 Comm: nft No contaminado 6.10. 0-rc5+ #1 [..] con un conjunto de reglas adecuado durante la validaci\u00f3n de los almacenes de registros. No veo ninguna raz\u00f3n real para intentar verificar esto desde nft_validate_register_store(); en este punto, la transacci\u00f3n a\u00fan est\u00e1 en progreso, por lo que no tenemos una imagen completa del gr\u00e1fico de reglas. Para nf-next, podr\u00eda tener sentido eliminarlo o hacer que esto dependa de table-\u0026gt;validate_state en caso de que podamos detectar un error antes (para mejorar el informe de errores al espacio de 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    "vulnrichment": {
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\"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nf_tables: prefer nft_chain_validate\\n\\nnft_chain_validate already performs loop detection because a cycle will\\nresult in a call stack overflow (ctx-\u003elevel \u003e= NFT_JUMP_STACK_SIZE).\\n\\nIt also follows maps via -\u003evalidate callback in nft_lookup, so there\\nappears no reason to iterate the maps again.\\n\\nnf_tables_check_loops() and all its helper functions can be removed.\\nThis improves ruleset load time significantly, from 23s down to 12s.\\n\\nThis also fixes a crash bug. 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      "cveMetadata": "{\"cveId\": \"CVE-2024-41042\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T21:59:42.488Z\", \"dateReserved\": \"2024-07-12T12:17:45.624Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-29T14:31:55.530Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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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.