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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Fix ia_size underflow\n\niattr::ia_size is a loff_t, which is a signed 64-bit type. NFSv3 and\nNFSv4 both define file size as an unsigned 64-bit type. Thus there\nis a range of valid file size values an NFS client can send that is\nalready larger than Linux can handle.\n\nCurrently decode_fattr4() dumps a full u64 value into ia_size. If\nthat value happens to be larger than S64_MAX, then ia_size\nunderflows. I'm about to fix up the NFSv3 behavior as well, so let's\ncatch the underflow in the common code path: nfsd_setattr()."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: NFSD: corrija el desbordamiento insuficiente de ia_size iattr::ia_size es un loff_t, que es un tipo de 64 bits firmado. NFSv3 y NFSv4 definen el tama\u00f1o del archivo como un tipo de 64 bits sin firmar. Por lo tanto, existe un rango de valores de tama\u00f1o de archivo v\u00e1lidos que un cliente NFS puede enviar y que ya es mayor de lo que Linux puede manejar. Actualmente, decode_fattr4() vuelca un valor u64 completo en ia_size. Si ese valor resulta ser mayor que S64_MAX, entonces ia_size tiene un desbordamiento insuficiente. Tambi\u00e9n estoy a punto de arreglar el comportamiento de NFSv3, as\u00ed que detectemos el desbordamiento en la ruta del c\u00f3digo com\u00fan: nfsd_setattr()."}], "id": "CVE-2022-48828", "lastModified": "2025-06-27T11:15:22.540", "metrics": {}, "published": "2024-07-16T12:15:06.477", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/38d02ba22e43b6fc7d291cf724bc6e3b7be6626b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8e0ecaf7a7e57b30284d6b3289cc436100fadc48"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d2211e6e34d0755f35e2f8c22d81999fa81cfc71"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/da22ca1ad548429d7822011c54cfe210718e0aa7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e6faac3f58c7c4176b66f63def17a34232a17b0e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/38d02ba22e43b6fc7d291cf724bc6e3b7be6626b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/8e0ecaf7a7e57b30284d6b3289cc436100fadc48"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/da22ca1ad548429d7822011c54cfe210718e0aa7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/e6faac3f58c7c4176b66f63def17a34232a17b0e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

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{}