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CVE-2022-36086

Estado: ModificadaCrítica (9.8)—

linked_list_allocator is an allocator usable for no_std systems. Prior to version 0.10.2, the heap initialization methods were missing a minimum size check for the given heap size argument. This could lead to out-of-bound writes when a heap was initialized with a size smaller than `3 * size_of::<usize>` because of metadata write operations. This vulnerability impacts all the initialization functions on the `Heap` and `LockedHeap` types, including `Heap::new`, `Heap::init`, `Heap::init_from_slice`, and `LockedHeap::new`. It also affects multiple uses of the `Heap::extend` method.

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Version 0.10.2 contains a patch for the issue. As a workaround, ensure that the heap is only initialized with a size larger than `3 * size_of::<usize>` and that the `Heap::extend` method is only called with sizes larger than `2 * size_of::<usize>()`. Also, ensure that the total heap size is (and stays) a multiple of `2 * size_of::<usize>()`.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Rust-osdev — Linked-list-allocator

CWE

Referencias

JSON original (NVD)

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      "value": "linked_list_allocator is an allocator usable for no_std systems. Prior to version 0.10.2, the heap initialization methods were missing a minimum size check for the given heap size argument. This could lead to out-of-bound writes when a heap was initialized with a size smaller than `3 * size_of::<usize>` because of metadata write operations. This vulnerability impacts all the initialization functions on the `Heap` and `LockedHeap` types, including `Heap::new`, `Heap::init`, `Heap::init_from_slice`, and `LockedHeap::new`. It also affects multiple uses of the `Heap::extend` method. Version 0.10.2 contains a patch for the issue. As a workaround, ensure that the heap is only initialized with a size larger than `3 * size_of::<usize>` and that the `Heap::extend` method is only called with sizes larger than `2 * size_of::<usize>()`. Also, ensure that the total heap size is (and stays) a multiple of `2 * size_of::<usize>()`."
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      "value": "linked_list_allocator es un asignador usable en sistemas no_std. En versiones anteriores a 0.10.2, los métodos de inicialización de la pila carecían de una comprobación del tamaño mínimo para el argumento del tamaño de la pila. Esto podía conllevar a escrituras fuera de límites cuando una pila es inicializada con un tamaño inferior a \"3 * size_of::(usize)\" debido a las operaciones de escritura de metadatos. Esta vulnerabilidad afecta a todas las funciones de inicialización de los tipos \"Heap\" y \"LockedHeap\", incluyendo \"Heap::new\", \"Heap::init\", \"Heap::init_from_slice\", y \"LockedHeap::new\". También afecta a múltiples usos del método \"Heap::extend\". La versión 0.10.2 contiene un parche para este problema. Como mitigación, asegúrese de que la pila sólo es inicializada con un tamaño superior a \"3 * size_of::(usize)\" y que el método \"Heap::extend\" sólo es llamado con tamaños superiores a \"2 * size_of::(usize)()\". Además, asegúrese de que el tamaño total de la pila es (y es mantenido) un múltiplo de \"2 * size_of::(usize)()\""
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  "lastModified": "2026-06-17T04:52:53.377",
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