CVE-2022-36086

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>()`.

CVSS v3.0 9.8 CRITICAL

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j	Exploit Mitigation Third Party Advisory
https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf	Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:rust-osdev:linked-list-allocator:*:*:*:*:*:rust:*:*

Information

Published : 2022-09-07 16:15

Updated : 2022-09-12 11:20

NVD link : CVE-2022-36086

Mitre link : CVE-2022-36086

JSON object : View

CWE

CWE-787

Out-of-bounds Write

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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Products Affected

rust-osdev

linked-list-allocator

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