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El an\u00e1lisis revel\u00f3 que esto se debe a que nilfs_segctor_sync(), que se sincroniza con el hilo del escritor de registros, puede ser llamado despu\u00e9s de que nilfs_segctor_destroy() finalice ese hilo, como se muestra en el seguimiento de llamadas a continuaci\u00f3n: nilfs_detach_log_writer nilfs_segctor_destroy nilfs_segctor_kill_thread --> Apagar el hilo del escritor de registros Flush_work nilfs_iput_work_func nilfs_dispose_list iput nilfs_evict_inode nilfs_transaction_commit nilfs_construct_segment (si el inodo necesita sincronizaci\u00f3n) nilfs_segctor_sync --> Intente sincronizar con el hilo del escritor de registros *** DEADLOCK *** Solucione este problema cambiando nilfs_segctor_sync() para que el hilo del escritor de registros regrese normalmente sin sincronizarse despu\u00e9s de que termine y forzando las tareas que ya est\u00e1n esperando a completarse una vez que finaliza el hilo. La eliminaci\u00f3n de metadatos del inodo omitido se procesar\u00e1 en conjunto en el trabajo de limpieza posterior en nilfs_segctor_destroy()."}], "id": "CVE-2024-38582", "lastModified": "2025-11-04T18:16:27.240", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-06-19T14:15:18.273", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/06afce714d87c7cd1dcfccbcd800c5c5d2cf1cfd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1c3844c5f4eac043954ebf6403fa9fd1f0e9c1c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6e5c8e8e024e147b834f56f2115aad241433679b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/911d38be151921a5d152bb55e81fd752384c6830"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a8799662fed1f8747edae87a1937549288baca6a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bc9cee50a4a4ca23bdc49f75ea8242d8a2193b3b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c516db6ab9eabbedbc430b4f93b0d8728e9b427f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eb85dace897c5986bc2f36b3c783c6abb8a4292e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eff7cdf890b02596b8d73e910bdbdd489175dbdb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/06afce714d87c7cd1dcfccbcd800c5c5d2cf1cfd"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1c3844c5f4eac043954ebf6403fa9fd1f0e9c1c0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6e5c8e8e024e147b834f56f2115aad241433679b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/911d38be151921a5d152bb55e81fd752384c6830"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a8799662fed1f8747edae87a1937549288baca6a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bc9cee50a4a4ca23bdc49f75ea8242d8a2193b3b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c516db6ab9eabbedbc430b4f93b0d8728e9b427f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eb85dace897c5986bc2f36b3c783c6abb8a4292e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eff7cdf890b02596b8d73e910bdbdd489175dbdb"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: nilfs2: fix potential hang in nilfs_detach_log_writer()", "id": "2293407", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2293407"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnilfs2: fix potential hang in nilfs_detach_log_writer()\nSyzbot has reported a potential hang in nilfs_detach_log_writer() called\nduring nilfs2 unmount.\nAnalysis revealed that this is because nilfs_segctor_sync(), which\nsynchronizes with the log writer thread, can be called after\nnilfs_segctor_destroy() terminates that thread, as shown in the call trace\nbelow:\nnilfs_detach_log_writer\nnilfs_segctor_destroy\nnilfs_segctor_kill_thread --> Shut down log writer thread\nflush_work\nnilfs_iput_work_func\nnilfs_dispose_list\niput\nnilfs_evict_inode\nnilfs_transaction_commit\nnilfs_construct_segment (if inode needs sync)\nnilfs_segctor_sync --> Attempt to synchronize with\nlog writer thread\n*** DEADLOCK ***\nFix this issue by changing nilfs_segctor_sync() so that the log writer\nthread returns normally without synchronizing after it terminates, and by\nforcing tasks that are already waiting to complete once after the thread\nterminates.\nThe skipped inode metadata flushout will then be processed together in the\nsubsequent cleanup work in nilfs_segctor_destroy().", "A flaw was found in the Linux kernel. A potential hang in nilfs_detach_log_writer() may lead to compromised availability."], "name": "CVE-2024-38582", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-06-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-38582\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-38582\nhttps://lore.kernel.org/linux-cve-announce/2024061948-CVE-2024-38582-6165@gregkh/T"], "statement": "No Red Hat products are affected by this vulnerability.", "threat_severity": "Moderate"}

{}