Vulnerability-Lookup

CVE-2022-36086 (GCVE-0-2022-36086)

Vulnerability from cvelistv5 – Published: 2022-09-07 22:50 – Updated: 2025-04-22 17:23

Title

linked_list_allocator vulnerable to out-of-bound writes on `Heap` initialization and `Heap::extend`

Summary

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>()`.

Severity

8.4 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-22 15:42 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787 - Out-of-bounds Write

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7963 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/rust-osdev/linked-list-allocat…	x_refsource_CONFIRM
https://github.com/rust-osdev/linked-list-allocat…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
rust-osdev	linked-list-allocator	Affected: < 0.10.2	guessed

Show details on NVD website

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                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2022-09-07T22:50:09.000Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j"
            },
            {
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf"
            }
          ],
          "source": {
            "advisory": "GHSA-xg8p-34w2-j49j",
            "discovery": "UNKNOWN"
          },
          "title": "linked_list_allocator vulnerable to out-of-bound writes on `Heap` initialization and `Heap::extend`",
          "x_legacyV4Record": {
            "CVE_data_meta": {
              "ASSIGNER": "security-advisories@github.com",
              "ID": "CVE-2022-36086",
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              "TITLE": "linked_list_allocator vulnerable to out-of-bound writes on `Heap` initialization and `Heap::extend`"
            },
            "affects": {
              "vendor": {
                "vendor_data": [
                  {
                    "product": {
                      "product_data": [
                        {
                          "product_name": "linked-list-allocator",
                          "version": {
                            "version_data": [
                              {
                                "version_value": "\u003c 0.10.2"
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                    "vendor_name": "rust-osdev"
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                  "lang": "eng",
                  "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::\u003cusize\u003e` 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::\u003cusize\u003e` and that the `Heap::extend` method is only called with sizes larger than `2 * size_of::\u003cusize\u003e()`. Also, ensure that the total heap size is (and stays) a multiple of `2 * size_of::\u003cusize\u003e()`."
                }
              ]
            },
            "impact": {
              "cvss": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 8.4,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              }
            },
            "problemtype": {
              "problemtype_data": [
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                  "description": [
                    {
                      "lang": "eng",
                      "value": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer"
                    }
                  ]
                },
                {
                  "description": [
                    {
                      "lang": "eng",
                      "value": "CWE-787: Out-of-bounds Write"
                    }
                  ]
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              ]
            },
            "references": {
              "reference_data": [
                {
                  "name": "https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j",
                  "refsource": "CONFIRM",
                  "url": "https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j"
                },
                {
                  "name": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf",
                  "refsource": "MISC",
                  "url": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf"
                }
              ]
            },
            "source": {
              "advisory": "GHSA-xg8p-34w2-j49j",
              "discovery": "UNKNOWN"
            }
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2022-36086",
        "datePublished": "2022-09-07T22:50:09.000Z",
        "dateReserved": "2022-07-15T00:00:00.000Z",
        "dateUpdated": "2025-04-22T17:23:22.210Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

FKIE_CVE-2022-36086

Vulnerability from fkie_nvd - Published: 2022-09-07 23:15 - Updated: 2026-06-17 04:52

Severity

8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf	Patch, Third Party Advisory
security-advisories@github.com	https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j	Exploit, Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j	Exploit, Mitigation, Third Party Advisory

Impacted products

	Vendor	Product	Version
	rust-osdev	linked-list-allocator	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "linked-list-allocator",
          "vendor": "rust-osdev",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.10.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:rust-osdev:linked-list-allocator:*:*:*:*:*:rust:*:*",
              "matchCriteriaId": "D1EB783F-18F3-471C-8006-9949D06163C3",
              "versionEndExcluding": "0.10.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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::\u003cusize\u003e` 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::\u003cusize\u003e` and that the `Heap::extend` method is only called with sizes larger than `2 * size_of::\u003cusize\u003e()`. Also, ensure that the total heap size is (and stays) a multiple of `2 * size_of::\u003cusize\u003e()`."
    },
    {
      "lang": "es",
      "value": "linked_list_allocator es un asignador usable en sistemas no_std. En versiones anteriores a 0.10.2, los m\u00e9todos de inicializaci\u00f3n de la pila carec\u00edan de una comprobaci\u00f3n del tama\u00f1o m\u00ednimo para el argumento del tama\u00f1o de la pila. Esto pod\u00eda conllevar a escrituras fuera de l\u00edmites cuando una pila es inicializada con un tama\u00f1o inferior a \"3 * size_of::(usize)\" debido a las operaciones de escritura de metadatos. Esta vulnerabilidad afecta a todas las funciones de inicializaci\u00f3n de los tipos \"Heap\" y \"LockedHeap\", incluyendo \"Heap::new\", \"Heap::init\", \"Heap::init_from_slice\", y \"LockedHeap::new\". Tambi\u00e9n afecta a m\u00faltiples usos del m\u00e9todo \"Heap::extend\". La versi\u00f3n 0.10.2 contiene un parche para este problema. Como mitigaci\u00f3n, aseg\u00farese de que la pila s\u00f3lo es inicializada con un tama\u00f1o superior a \"3 * size_of::(usize)\" y que el m\u00e9todo \"Heap::extend\" s\u00f3lo es llamado con tama\u00f1os superiores a \"2 * size_of::(usize)()\". Adem\u00e1s, aseg\u00farese de que el tama\u00f1o total de la pila es (y es mantenido) un m\u00faltiplo de \"2 * size_of::(usize)()\""
    }
  ],
  "id": "CVE-2022-36086",
  "lastModified": "2026-06-17T04:52:53.377",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-36086",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-04-22T15:42:12.682877Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2022-09-07T23:15:14.097",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
      ],
      "url": "https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1284"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-XG8P-34W2-J49J

Vulnerability from github – Published: 2022-09-16 17:41 – Updated: 2022-09-16 17:41

Summary

linked_list_allocator vulnerable to out-of-bound writes on `Heap` initialization and `Heap::extend`

Details

Impact

What kind of vulnerability is it? Who is impacted?

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.

Initialization Functions

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.

`Heap::extend`

This vulnerability impacts three specific uses of the Heap::extend method:

When calling Heap::extend with a size smaller than two usizes (e.g., 16 on x86_64), the size was erroneously rounded up to the minimum size, which could result in an out-of-bounds write.
Calling Heap::extend on an empty heap tried to construct a heap starting at address 0, which is also an out-of-bounds write.
One specific way to trigger this accidentally is to call Heap::new (or a similar constructor) with a heap size that is smaller than two usizes. This was treated as an empty heap as well.
Calling Heap::extend on a heap whose size is not a multiple of the size of two usizes resulted in unaligned writes. It also left the heap in an unexpected state, which might lead to subsequent issues. We did not find a way to exploit this undefined behavior yet (apart from DoS on platforms that fault on unaligned writes).

Patches

Has the problem been patched? What versions should users upgrade to?

We published a patch in version 0.10.2 and recommend all users to upgrade to it. This patch release includes the following changes:

The initialization functions now panic if the given size is not large enough to store the necessary metadata. Depending on the alignment of the heap bottom pointer, the minimum size is between 2 * size_of::<usize> and 3 * size_of::<usize>.
The extend method now panics when trying to extend an unitialized heap.
Extend calls with a size smaller than size_of::<usize>() * 2 are now buffered internally and not added to the list directly. The buffered region will be merged with future extend calls.
The size() method now returns the usable size of the heap, which might be slightly smaller than the top() - bottom() difference because of alignment constraints.

Workarounds

Is there a way for users to fix or remediate the vulnerability without upgrading?

To avoid this issue, 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>().

For more information

If you have any questions or comments about this advisory: * Open an issue in this repository * Email @phil-opp at security@phil-opp.com

Acknowledgements

This issue was responsibly reported by Evan Richter at ForAllSecure and found with Mayhem and cargo fuzz.

Severity

8.4 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.10.1"
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "linked_list_allocator"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.10.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-36086"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119",
      "CWE-1284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-09-16T17:41:33Z",
    "nvd_published_at": "2022-09-07T23:15:00Z",
    "severity": "HIGH"
  },
  "details": "## Impact\n_What kind of vulnerability is it? Who is impacted?_\n\nThis 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.\n\n### Initialization Functions\n\nThe 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::\u003cusize\u003e` because of metadata write operations.\n\n### `Heap::extend`\n\nThis vulnerability impacts three specific uses of the `Heap::extend` method:\n\n- When calling `Heap::extend` with a size smaller than two `usize`s (e.g., 16 on `x86_64`), the size was erroneously rounded up to the minimum size, which could result in an **_out-of-bounds write_**.\n- Calling `Heap::extend` on an empty heap tried to construct a heap starting at address 0, which is also an **_out-of-bounds write_**.\n  - One specific way to trigger this accidentally is to call `Heap::new` (or a similar constructor) with a heap size that is smaller than two `usize`s. This was treated as an empty heap as well.\n- Calling `Heap::extend` on a heap whose size is not a multiple of the size of two `usize`s resulted in _unaligned writes_. It also left the heap in an unexpected state, which might lead to subsequent issues. We did not find a way to exploit this undefined behavior yet (apart from DoS on platforms that fault on unaligned writes).\n\n## Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nWe published a patch in version `0.10.2` and recommend all users to upgrade to it. This patch release includes the following changes:\n\n- The initialization functions now panic if the given size is not large enough to store the necessary metadata. Depending on the alignment of the heap bottom pointer, the minimum size is between `2 * size_of::\u003cusize\u003e` and `3 * size_of::\u003cusize\u003e`.\n- The `extend` method now panics when trying to extend an unitialized heap.\n- Extend calls with a size smaller than `size_of::\u003cusize\u003e() * 2` are now buffered internally and not added to the list directly. The buffered region will be merged with future `extend` calls.\n- The `size()` method now returns the _usable_ size of the heap, which might be slightly smaller than the `top() - bottom()` difference because of alignment constraints.\n\n## Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nTo avoid this issue, ensure that the heap is only initialized with a size larger than `3 * size_of::\u003cusize\u003e` and that the `Heap::extend` method is only called with sizes larger than `2 * size_of::\u003cusize\u003e()`. Also, ensure that the total heap size is (and stays) a multiple of `2 * size_of::\u003cusize\u003e()`.\n\n## For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in this repository\n* Email @phil-opp at [security@phil-opp.com](mailto:security@phil-opp.com)\n\n## Acknowledgements\n\nThis issue was responsibly reported by Evan Richter at ForAllSecure and found with [Mayhem](https://forallsecure.com/mayhem-for-code) and [cargo fuzz](https://github.com/rust-fuzz/cargo-fuzz).",
  "id": "GHSA-xg8p-34w2-j49j",
  "modified": "2022-09-16T17:41:33Z",
  "published": "2022-09-16T17:41:33Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36086"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-xg8p-34w2-j49j"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rust-osdev/linked-list-allocator"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2022-0063.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "linked_list_allocator vulnerable to out-of-bound writes on `Heap` initialization and `Heap::extend`"
}

GSD-2022-36086

Vulnerability from gsd - Updated: 2023-12-13 01:19

Details

Aliases

CVE-2022-36086

Aliases

CVE-2022-36086

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2022-36086",
    "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::\u003cusize\u003e` 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::\u003cusize\u003e` and that the `Heap::extend` method is only called with sizes larger than `2 * size_of::\u003cusize\u003e()`. Also, ensure that the total heap size is (and stays) a multiple of `2 * size_of::\u003cusize\u003e()`.",
    "id": "GSD-2022-36086",
    "references": [
      "https://www.suse.com/security/cve/CVE-2022-36086.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2022-36086"
      ],
      "details": "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::\u003cusize\u003e` 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::\u003cusize\u003e` and that the `Heap::extend` method is only called with sizes larger than `2 * size_of::\u003cusize\u003e()`. Also, ensure that the total heap size is (and stays) a multiple of `2 * size_of::\u003cusize\u003e()`.",
      "id": "GSD-2022-36086",
      "modified": "2023-12-13T01:19:21.753245Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2022-36086",
        "STATE": "PUBLIC",
        "TITLE": "linked_list_allocator vulnerable to out-of-bound writes on `Heap` initialization and `Heap::extend`"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "linked-list-allocator",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 0.10.2"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "rust-osdev"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "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::\u003cusize\u003e` 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::\u003cusize\u003e` and that the `Heap::extend` method is only called with sizes larger than `2 * size_of::\u003cusize\u003e()`. Also, ensure that the total heap size is (and stays) a multiple of `2 * size_of::\u003cusize\u003e()`."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer"
              }
            ]
          },
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-787: Out-of-bounds Write"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j",
            "refsource": "CONFIRM",
            "url": "https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j"
          },
          {
            "name": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf",
            "refsource": "MISC",
            "url": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-xg8p-34w2-j49j",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:rust-osdev:linked-list-allocator:*:*:*:*:*:rust:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.10.2",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2022-36086"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "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::\u003cusize\u003e` 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::\u003cusize\u003e` and that the `Heap::extend` method is only called with sizes larger than `2 * size_of::\u003cusize\u003e()`. Also, ensure that the total heap size is (and stays) a multiple of `2 * size_of::\u003cusize\u003e()`."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-1284"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j",
              "refsource": "CONFIRM",
              "tags": [
                "Exploit",
                "Mitigation",
                "Third Party Advisory"
              ],
              "url": "https://github.com/rust-osdev/linked-list-allocator/security/advisories/GHSA-xg8p-34w2-j49j"
            },
            {
              "name": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2023-07-21T19:23Z",
      "publishedDate": "2022-09-07T23:15Z"
    }
  }
}

OPENSUSE-SU-2024:12469-1

Vulnerability from csaf_opensuse - Published: 2024-06-15 00:00 - Updated: 2026-09-20 20:39

Summary

cargo-audit-advisory-db-20221102-1.1 on GA media

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2022-36086.

CVE-2022-36086

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Recommended: 4 products

Open the full advisory

RUSTSEC-2022-0063 (CVE-2022-36086)

Vulnerability from osv_rustsec – Published: 2022-09-07 12:00 – Updated: 2026-10-12 17:47 – Source website

Summary

Multiple vulnerabilities resulting in out-of-bounds writes

Details

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.
When calling Heap::extend with a size smaller than two usizes (e.g., 16 on x86_64), the size was erroneously rounded up to the minimum size, which could result in an out-of-bounds write.
Calling Heap::extend on an empty heap tried to construct a heap starting at address 0, which is also an out-of-bounds write.
One specific way to trigger this accidentally is to call Heap::new (or a similar constructor) with a heap size that is smaller than two usizes. This was treated as an empty heap as well.
Calling Heap::extend on a heap whose size is not a multiple of the size of two usizes resulted in unaligned writes. It also left the heap in an unexpected state, which might lead to subsequent issues. We did not find a way to exploit this undefined behavior yet (apart from DoS on platforms that fault on unaligned writes).

Severity

8.4 (High)


                    
                      CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://crates.io/crates/linked_list_allocator	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2022-0063.html	ADVISORY
	https://github.com/rust-osdev/linked-list-allocat…	WEB

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "linked_list_allocator",
        "purl": "pkg:cargo/linked_list_allocator"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.10.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2022-36086",
    "GHSA-xg8p-34w2-j49j"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "* 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::\u003cusize\u003e` because of metadata write operations.\n* When calling `Heap::extend` with a size smaller than two `usize`s (e.g., 16 on `x86_64`), the size was erroneously rounded up to the minimum size, which could result in an **out-of-bounds write**.\n* Calling `Heap::extend` on an empty heap tried to construct a heap starting at address 0, which is also an **out-of-bounds write**.\n  * One specific way to trigger this accidentally is to call `Heap::new` (or a similar constructor) with a heap size that is smaller than two `usize`s. This was treated as an empty heap as well.\n* Calling `Heap::extend` on a heap whose size is not a multiple of the size of two `usize`s resulted in unaligned writes. It also left the heap in an unexpected state, which might lead to subsequent issues. We did not find a way to exploit this undefined behavior yet (apart from DoS on platforms that fault on unaligned writes).",
  "id": "RUSTSEC-2022-0063",
  "modified": "2026-10-12T17:47:59Z",
  "published": "2022-09-07T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/linked_list_allocator"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2022-0063.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-osdev/linked-list-allocator/commit/013b0758643943e8df5b17bbb495460ff47e8bbf"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Multiple vulnerabilities resulting in out-of-bounds writes"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2022-36086 (GCVE-0-2022-36086)

FKIE_CVE-2022-36086

GHSA-XG8P-34W2-J49J

Impact

Initialization Functions

Heap::extend

Patches

Workarounds

For more information

Acknowledgements

GSD-2022-36086

OPENSUSE-SU-2024:12469-1

RUSTSEC-2022-0063 (CVE-2022-36086)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour

`Heap::extend`