cve-2024-26981
Vulnerability from cvelistv5
Published
2024-05-01 05:27
Modified
2024-08-02 00:21
Severity
Summary
nilfs2: fix OOB in nilfs_set_de_type
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website


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          "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 \u003e\u003e 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 \u0026 S_IFMT) \u003e\u003e S_SHIFT\".\n\nstatic void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode\n *inode)\n{\n\tumode_t mode = inode-\u003ei_mode;\n\n\tde-\u003efile_type = nilfs_type_by_mode[(mode \u0026 S_IFMT)\u003e\u003eS_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 \u0026 S_IFMT == S_IFMT\" is satisfied.  Therefore, a\npatch to resize the nilfs_type_by_mode array should be applied to prevent\nOOB errors."
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    "dateReserved": "2024-02-19T14:20:24.204Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26981\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T06:15:15.517\",\"lastModified\":\"2024-06-27T12:15:23.460\",\"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 \u003e\u003e 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 \u0026 S_IFMT) \u003e\u003e S_SHIFT\\\".\\n\\nstatic void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode\\n *inode)\\n{\\n\\tumode_t mode = inode-\u003ei_mode;\\n\\n\\tde-\u003efile_type = nilfs_type_by_mode[(mode \u0026 S_IFMT)\u003e\u003eS_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 \u0026 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 \u0026gt;\u0026gt; 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 \u0026amp; S_IFMT) \u0026gt;\u0026gt; S_SHIFT\\\". static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode) { umode_t modo = inodo-\u0026gt;i_mode; de-\u0026gt;tipo_archivo = nilfs_type_by_mode[(modo \u0026amp; S_IFMT)\u0026gt;\u0026gt;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 \u0026amp; 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.\"}],\"metrics\":{},\"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\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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