CVE-2022-36086

HIGHNVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.4 under NVD CVSS v3. EPSS exploit probability: 0.9% (56th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 8.4Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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:: 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:: and that the Heap::extend method is only called with sizes larger than 2 * size_of::(). Also, ensure that the total heap size is (and stays) a multiple of 2 * size_of::().

CVSS v3
8.4
EG Score
8.4HIGHmedium confidence
EG Risk
54
EG Risk 54/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity84% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.9%
EPSS %ILE
57th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 7, 2022

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Sep 5, 2026
Patch available. Sources: github_commit, github.
githubMentions a patch (unverified)

Out-of-bound writes possible on `Heap` initialization and `Heap::extend` · Advisory · rust-osdev/linked-list-allocator · GitHub

https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j
github_commit

commit 013b07586439 (rust-osdev/linked-list-allocator)

Fix landed in rust-osdev/linked-list-allocator commit 013b07586439 — awaiting tagged release

https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf

Affected Packages

(1 across 1 ecosystem)
crates.io(1)
PackageVulnerable rangeFix by version rangeDependents
linked_list_allocator—
  • every version up to 0.10.2: fixed in 0.10.2
  • 0.0.0-0 up to 0.10.2: fixed in 0.10.2
—

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 186 total refreshes for this CVE.

  1. 2026-10-09 20:04 UTCEPSS rescore
  2. 2026-10-08 16:40 UTCEPSS rescore
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  1. 2026-09-07 15:58 UTCEPSS rescore
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  4. 2026-09-05 04:48 UTCOSV refresh
  5. 2026-09-04 13:57 UTCEPSS rescore
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  21. 2026-08-18 15:28 UTCOSV refresh
  22. 2026-08-18 13:45 UTCEPSS rescore
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  24. 2026-08-16 14:53 UTCEPSS rescore
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  40. 2026-08-03 10:57 UTCOSV refresh
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  51. 2026-07-24 14:15 UTCEPSS rescore
  52. 2026-07-23 14:16 UTCEPSS rescore
  53. 2026-07-23 02:12 UTCEG score recompute
  54. 2026-07-22 22:59 UTCEG score recompute
  55. 2026-07-22 14:06 UTCEPSS rescore
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  67. 2026-07-15 16:56 UTCEPSS rescore
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  73. 2026-07-13 06:11 UTCEPSS rescore
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  75. 2026-07-12 05:44 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2022-36086?
CVE-2022-36086 is a high vulnerability published on September 7, 2022. linkedlistallocator is an allocator usable for nostd 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 * sizeof::<usize>…
When was CVE-2022-36086 disclosed?
CVE-2022-36086 was first published on September 7, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-36086 actively exploited?
CVE-2022-36086 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (57th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-36086?
CVE-2022-36086 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2022-36086?
A fix for CVE-2022-36086 is available: update to the fixed version the vendor names in its advisory.

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