fkie_cve-2024-26981
Vulnerability from fkie_nvd
Published
2024-05-01 06:15
Modified
2024-12-23 20:42
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix OOB in nilfs_set_de_type The size of the nilfs_type_by_mode array in the fs/nilfs2/dir.c file is defined as "S_IFMT >> S_SHIFT", but the nilfs_set_de_type() function, which uses this array, specifies the index to read from the array in the same way as "(mode & S_IFMT) >> S_SHIFT". static void nilfs_set_de_type(struct nilfs_dir_entry *de, struct inode *inode) { umode_t mode = inode->i_mode; de->file_type = nilfs_type_by_mode[(mode & S_IFMT)>>S_SHIFT]; // oob } However, when the index is determined this way, an out-of-bounds (OOB) error occurs by referring to an index that is 1 larger than the array size when the condition "mode & S_IFMT == S_IFMT" is satisfied. Therefore, a patch to resize the nilfs_type_by_mode array should be applied to prevent OOB errors.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/054f29e9ca05be3906544c5f2a2c7321c30a4243Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2382eae66b196c31893984a538908c3eb7506ff9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7061c7efbb9e8f11ce92d6b4646405ea2b0b4de1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/897ac5306bbeb83e90c437326f7044c79a17c611Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/90823f8d9ecca3d5fa6b102c8e464c62f416975fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/90f43980ea6be4ad903e389be9a27a2a0018f1c8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bdbe483da21f852c93b22557b146bc4d989260f0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c4a7dc9523b59b3e73fd522c73e95e072f876b16Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List, Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.9
linux linux_kernel 6.9
linux linux_kernel 6.9
linux linux_kernel 6.9
debian debian_linux 10.0


To clipboard 

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   cveTags: [],
   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 tamaño de la matriz nilfs_type_by_mode en el archivo fs/nilfs2/dir.c se define como \"S_IFMT >> S_SHIFT\", pero la función nilfs_set_de_type() , que utiliza esta matriz, especifica el índice 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 índice se determina de esta manera, se produce un error fuera de los límites (OOB) al hacer referencia a un índice que es 1 mayor que el tamaño de la matriz cuando la condición \"modo & S_IFMT == S_IFMT\" es satisfecho. Por lo tanto, se debe aplicar un parche para cambiar el tamaño de la matriz nilfs_type_by_mode para evitar errores OOB.",
      },
   ],
   id: "CVE-2024-26981",
   lastModified: "2024-12-23T20:42:57.277",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 7.8,
               baseSeverity: "HIGH",
               confidentialityImpact: "HIGH",
               integrityImpact: "HIGH",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
               version: "3.1",
            },
            exploitabilityScore: 1.8,
            impactScore: 5.9,
            source: "nvd@nist.gov",
            type: "Primary",
         },
      ],
   },
   published: "2024-05-01T06:15:15.517",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         tags: [
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   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Analyzed",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-129",
            },
         ],
         source: "nvd@nist.gov",
         type: "Primary",
      },
   ],
}


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