{"id":"CVE-2022-36086","revision":"4e78be2019784fdda9e8e308dc2e6098","records":[{"revision":"4e78be2019784fdda9e8e308dc2e6098","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2022-36086","aliases":[],"title":"linked_list_allocator vulnerable to out-of-bound writes on `Heap` initialization and `Heap::extend`","description":"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>()`.","state":0,"publishedAt":"2022-09-07T22:50:09+00:00","modifiedAt":"2025-04-22T17:23:22.21+00:00","affected":[{"ecosystem":"Vendor product","name":"linked-list-allocator","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"linked-list-allocator\",\n                    \"vendor\": \"rust-osdev\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"< 0.10.2\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.4,"severity":"HIGH"}],"references":["https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j","https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-36086","license":"CVE Program Terms of Use","key":"cve-program:CVE-2022-36086","identifiers":["CVE-2022-36086"]},"retained":false,"historicalAffected":[]}],"coverage":[]}