fkie_cve-2024-47757
Vulnerability from fkie_nvd
Published
2024-10-21 13:15
Modified
2024-11-08 16:15
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential oob read in nilfs_btree_check_delete() The function nilfs_btree_check_delete(), which checks whether degeneration to direct mapping occurs before deleting a b-tree entry, causes memory access outside the block buffer when retrieving the maximum key if the root node has no entries. This does not usually happen because b-tree mappings with 0 child nodes are never created by mkfs.nilfs2 or nilfs2 itself. However, it can happen if the b-tree root node read from a device is configured that way, so fix this potential issue by adding a check for that case.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/257f9e5185eb6de83377caea686c306e22e871f2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a33e967b681e088a125b979975c93e3453e686cdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a8abfda768b9f33630cfbc4af6c4214f1e5681b0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c4cbcc64bb31e67e02940ce060cc77f7180564cfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c4f8554996e8ada3be872dfb8f60e93bcf15fb27Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d20674f31626e0596ae4c1d9401dfb6739b81b58Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed76d381dae125b81d09934e365391a656249da8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f3a9859767c7aea758976f5523903d247e585129
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f9c96351aa6718b42a9f42eaf7adce0356bdb5e8Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

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   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix potential oob read in nilfs_btree_check_delete()\n\nThe function nilfs_btree_check_delete(), which checks whether degeneration\nto direct mapping occurs before deleting a b-tree entry, causes memory\naccess outside the block buffer when retrieving the maximum key if the\nroot node has no entries.\n\nThis does not usually happen because b-tree mappings with 0 child nodes\nare never created by mkfs.nilfs2 or nilfs2 itself.  However, it can happen\nif the b-tree root node read from a device is configured that way, so fix\nthis potential issue by adding a check for that case.",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: se corrige una posible lectura fuera de línea en nilfs_btree_check_delete() La función nilfs_btree_check_delete(), que comprueba si se produce una degeneración en el mapeo directo antes de eliminar una entrada del árbol b, provoca un acceso a la memoria fuera del búfer de bloque al recuperar la clave máxima si el nodo raíz no tiene entradas. Esto no suele ocurrir porque los mapeos de árboles b con 0 nodos secundarios nunca son creados por mkfs.nilfs2 o nilfs2 en sí. Sin embargo, puede ocurrir si el nodo raíz del árbol b que lee desde un dispositivo está configurado de esa manera, así que solucione este posible problema añadiendo una comprobación para ese caso.",
      },
   ],
   id: "CVE-2024-47757",
   lastModified: "2024-11-08T16:15:28.343",
   metrics: {
      cvssMetricV31: [
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            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 7.1,
               baseSeverity: "HIGH",
               confidentialityImpact: "HIGH",
               integrityImpact: "NONE",
               privilegesRequired: "LOW",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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            impactScore: 5.2,
            source: "nvd@nist.gov",
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   published: "2024-10-21T13:15:05.640",
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   vulnStatus: "Modified",
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               value: "CWE-125",
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         source: "nvd@nist.gov",
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}


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