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Mientras que el conjunto rhashtable gc se ejecuta de forma as\u00edncrona, una ejecuci\u00f3n le permite recopilar elementos de conjuntos an\u00f3nimos con tiempos de espera mientras se libera de la ruta de confirmaci\u00f3n. Mingi Cho inform\u00f3 originalmente este problema en una ruta diferente en 6.1.x con un pipapo configurado con tiempos de espera bajos, lo cual no es posible en sentido ascendente desde 7395dfacfff6 (\"netfilter: nf_tables: use la marca de tiempo para verificar el tiempo de espera del elemento establecido\"). Solucione este problema configurando la bandera muerta para que los conjuntos an\u00f3nimos omitan el gc as\u00edncrono en este caso. Seg\u00fan 08e4c8c5919f (\"netfilter: nf_tables: marcar el nuevo conjunto como muerto al cancelar la transacci\u00f3n\"), Florian planea acelerar la ruta de cancelaci\u00f3n liberando objetos a trav\u00e9s de la cola de trabajo, por lo tanto, esto tambi\u00e9n activa la bandera muerta para la ruta de cancelaci\u00f3n."}], "id": "CVE-2024-26643", "lastModified": "2025-03-13T21:20:19.930", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2024-03-21T11:15:28.340", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/291cca35818bd52a407bc37ab45a15816039e363"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/406b0241d0eb598a0b330ab20ae325537d8d8163"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5224afbc30c3ca9ba23e752f0f138729b2c48dd8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/552705a3650bbf46a22b1adedc1b04181490fc36"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d75a589bb92af1abf3b779cfcd1977ca11b27033"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e2d45f467096e931044f0ab7634499879d851a5c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/291cca35818bd52a407bc37ab45a15816039e363"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/406b0241d0eb598a0b330ab20ae325537d8d8163"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5224afbc30c3ca9ba23e752f0f138729b2c48dd8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/552705a3650bbf46a22b1adedc1b04181490fc36"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b2d6f9a5b1cf968f1eaa71085ceeb09c2cb276b1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d75a589bb92af1abf3b779cfcd1977ca11b27033"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e2d45f467096e931044f0ab7634499879d851a5c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/edcf1a3f182ecf8b6b805f0ce90570ea98c5f6bf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:3627", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.5.1.rt7.346.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2024:3618", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.5.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-06-05T00:00:00Z"}, {"advisory": "RHSA-2024:3306", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.18.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-05-23T00:00:00Z"}, {"advisory": "RHSA-2024:3306", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.18.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-05-23T00:00:00Z"}, {"advisory": "RHSA-2024:3461", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.67.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-05-29T00:00:00Z"}, {"advisory": "RHSA-2024:3460", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.67.1.rt14.352.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-05-29T00:00:00Z"}], "bugzilla": {"description": "kernel: netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout", "id": "2270879", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2270879"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-362", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout\nWhile the rhashtable set gc runs asynchronously, a race allows it to\ncollect elements from anonymous sets with timeouts while it is being\nreleased from the commit path.\nMingi Cho originally reported this issue in a different path in 6.1.x\nwith a pipapo set with low timeouts which is not possible upstream since\n7395dfacfff6 (\"netfilter: nf_tables: use timestamp to check for set\nelement timeout\").\nFix this by setting on the dead flag for anonymous sets to skip async gc\nin this case.\nAccording to 08e4c8c5919f (\"netfilter: nf_tables: mark newset as dead on\ntransaction abort\"), Florian plans to accelerate abort path by releasing\nobjects via workqueue, therefore, this sets on the dead flag for abort\npath too.", "A vulnerability was found in the netfilter/nf_tables subsystem of Linux Kernel, where a race condition caused where the garbage collector could prematurely collect elements from anonymous sets with timeouts while they were being released."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2024-26643", "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": "2024-03-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26643\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26643\nhttps://lore.kernel.org/linux-cve-announce/2024032150-CVE-2024-26643-4f9d@gregkh/T"], "threat_severity": "Moderate"}