CVE-2024-26981

{"id": "CVE-2024-26981", "metrics": {}, "published": "2024-05-01T06:15:15.517", "references": [{"url": "https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix OOB in nilfs_set_de_type\n\nThe size of the nilfs_type_by_mode array in the fs/nilfs2/dir.c file is\ndefined as \"S_IFMT >> S_SHIFT\", but the nilfs_set_de_type() function,\nwhich uses this array, specifies the index to read from the array in the\nsame way as \"(mode & S_IFMT) >> S_SHIFT\".\n\nstatic void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode\n *inode)\n{\n\tumode_t mode = inode->i_mode;\n\n\tde->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; // oob\n}\n\nHowever, when the index is determined this way, an out-of-bounds (OOB)\nerror occurs by referring to an index that is 1 larger than the array size\nwhen the condition \"mode & S_IFMT == S_IFMT\" is satisfied. Therefore, a\npatch to resize the nilfs_type_by_mode array should be applied to prevent\nOOB errors."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: corrige OOB en nilfs_set_de_type El tama\u00f1o de la matriz nilfs_type_by_mode en el archivo fs/nilfs2/dir.c se define como \"S_IFMT >> S_SHIFT\", pero la funci\u00f3n nilfs_set_de_type() , que utiliza esta matriz, especifica el \u00edndice a leer de la matriz de la misma manera que \"(mode & S_IFMT) >> S_SHIFT\". static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode) { umode_t modo = inodo->i_mode; de->tipo_archivo = nilfs_type_by_mode[(modo & S_IFMT)>>S_SHIFT]; // oob } Sin embargo, cuando el \u00edndice se determina de esta manera, se produce un error fuera de los l\u00edmites (OOB) al hacer referencia a un \u00edndice que es 1 mayor que el tama\u00f1o de la matriz cuando la condici\u00f3n \"modo & S_IFMT == S_IFMT\" es satisfecho. Por lo tanto, se debe aplicar un parche para cambiar el tama\u00f1o de la matriz nilfs_type_by_mode para evitar errores OOB."}], "lastModified": "2024-05-03T06:15:10.663", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}