{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-41042", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-12T12:17:45.624Z", "datePublished": "2024-07-29T14:31:55.530Z", "dateUpdated": "2025-05-04T09:20:46.322Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T09:20:46.322Z"}, "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->level >= NFT_JUMP_STACK_SIZE).\n\nIt also follows maps via ->validate 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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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't 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't 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->validate_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->level >= NFT_JUMP_STACK_SIZE). Tambi\u00e9n sigue los mapas a trav\u00e9s de ->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->validate_state en caso de que podamos detectar un error antes (para mejorar el informe de errores al espacio de usuario)."}], "id": "CVE-2024-41042", "lastModified": "2025-09-25T20:04:42.177", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-07-29T15:15:12.647", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1947e4c3346faa8ac7e343652c0fd3b3e394202f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/31c35f9f89ef585f1edb53e17ac73a0ca4a9712b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/717c91c6ed73e248de6a15bc53adefb81446c9d0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8246b7466c8da49d0d9e85e26cbd69dd6d3e3d1e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9df785aeb7dcc8efd1d4110bb27d26005298ebae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b6b6e430470e1c3c5513311cb35a15a205595abe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cd4348e0a50286282c314ad6d2b0740e7c812c24"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cff3bd012a9512ac5ed858d38e6ed65f6391008c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9df785aeb7dcc8efd1d4110bb27d26005298ebae"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cff3bd012a9512ac5ed858d38e6ed65f6391008c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:8870", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.27.1.rt7.368.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-11-05T00:00:00Z"}, {"advisory": "RHSA-2024:8856", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.27.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-11-05T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2025:9584", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "kernel-0:5.14.0-427.74.1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-06-25T00:00:00Z"}], "bugzilla": {"description": "kernel: netfilter: nf_tables: prefer nft_chain_validate", "id": "2300412", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2300412"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-121", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nf_tables: prefer nft_chain_validate\nnft_chain_validate already performs loop detection because a cycle will\nresult in a call stack overflow (ctx->level >= NFT_JUMP_STACK_SIZE).\nIt also follows maps via ->validate callback in nft_lookup, so there\nappears no reason to iterate the maps again.\nnf_tables_check_loops() and all its helper functions can be removed.\nThis improves ruleset load time significantly, from 23s down to 12s.\nThis also fixes a crash bug. Old loop detection code can result in\nunbounded recursion:\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[..]\nwith a suitable ruleset during validation of register stores.\nI can't 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't have a full picture of the rule graph.\nFor nf-next it might make sense to either remove it or make this depend\non table->validate_state in case we could catch an error earlier\n(for improved error reporting to userspace)."], "name": "CVE-2024-41042", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-07-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-41042\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-41042\nhttps://lore.kernel.org/linux-cve-announce/2024072924-CVE-2024-41042-c338@gregkh/T"], "threat_severity": "Low"}