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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors\n\nThe error handling in nilfs_empty_dir() when a directory folio/page read\nfails is incorrect, as in the old ext2 implementation, and if the\nfolio/page cannot be read or nilfs_check_folio() fails, it will falsely\ndetermine the directory as empty and corrupt the file system.\n\nIn addition, since nilfs_empty_dir() does not immediately return on a\nfailed folio/page read, but continues to loop, this can cause a long loop\nwith I/O if i_size of the directory's inode is also corrupted, causing the\nlog writer thread to wait and hang, as reported by syzbot.\n\nFix these issues by making nilfs_empty_dir() immediately return a false\nvalue (0) if it fails to get a directory folio/page."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: corrige el error de c\u00e1lculo de nilfs_empty_dir() y el bucle largo en errores de E/S. El manejo de errores en nilfs_empty_dir() cuando falla la lectura de una p\u00e1gina/folio de directorio es incorrecto, como en el antiguo ext2 implementaci\u00f3n, y si la publicaci\u00f3n/p\u00e1gina no se puede leer o nilfs_check_folio() falla, determinar\u00e1 err\u00f3neamente que el directorio est\u00e1 vac\u00edo y da\u00f1ar\u00e1 el sistema de archivos. Adem\u00e1s, dado que nilfs_empty_dir() no regresa inmediatamente tras una lectura fallida de un folio/p\u00e1gina, sino que contin\u00faa en bucle, esto puede provocar un bucle largo con E/S si i_size del inodo del directorio tambi\u00e9n est\u00e1 da\u00f1ado, lo que provoca que el subproceso del escritor de registros se bloquee. espera y cuelga, seg\u00fan lo informado por syzbot. Solucione estos problemas haciendo que nilfs_empty_dir() devuelva inmediatamente un valor falso (0) si no puede obtener una p\u00e1gina/folio del directorio."}], "id": "CVE-2024-39469", "lastModified": "2024-07-05T08:15:03.467", "metrics": {}, "published": "2024-06-25T15:15:15.340", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/11a2edb70356a2202dcb7c9c189c8356ab4752cd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/129dcd3e7d036218db3f59c82d82004b9539ed82"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2ac8a2fe22bdde9eecce2a42cf5cab79333fb428"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/405b71f1251e5ae865f53bd27c45114e6c83bee3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/59f14875a96ef93f05b82ad3c980605f2cb444b5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7373a51e7998b508af7136530f3a997b286ce81c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c77ad608df6c091fe64ecb91f41ef7cb465587f1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d18b05eda7fa77f02114f15b02c009f28ee42346"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors", "id": "2294308", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2294308"}, "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"}, "cwe": "CWE-1050", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors\nThe error handling in nilfs_empty_dir() when a directory folio/page read\nfails is incorrect, as in the old ext2 implementation, and if the\nfolio/page cannot be read or nilfs_check_folio() fails, it will falsely\ndetermine the directory as empty and corrupt the file system.\nIn addition, since nilfs_empty_dir() does not immediately return on a\nfailed folio/page read, but continues to loop, this can cause a long loop\nwith I/O if i_size of the directory's inode is also corrupted, causing the\nlog writer thread to wait and hang, as reported by syzbot.\nFix these issues by making nilfs_empty_dir() immediately return a false\nvalue (0) if it fails to get a directory folio/page."], "name": "CVE-2024-39469", "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": "2024-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-39469\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-39469\nhttps://lore.kernel.org/linux-cve-announce/2024062500-CVE-2024-39469-a1be@gregkh/T"], "threat_severity": "Low", "upstream_fix": "kernel 6.1.95, kernel 6.6.35, kernel 6.9.5, kernel 6.10-rc3"}