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CVE-2024-35879 (GCVE-0-2024-35879)

Vulnerability from cvelistv5 – Published: 2024-05-19 08:34 – Updated: 2026-08-05 11:30
VLAI
Title
of: dynamic: Synchronize of_changeset_destroy() with the devlink removals
Summary
In the Linux kernel, the following vulnerability has been resolved: of: dynamic: Synchronize of_changeset_destroy() with the devlink removals In the following sequence: 1) of_platform_depopulate() 2) of_overlay_remove() During the step 1, devices are destroyed and devlinks are removed. During the step 2, OF nodes are destroyed but __of_changeset_entry_destroy() can raise warnings related to missing of_node_put(): ERROR: memory leak, expected refcount 1 instead of 2 ... Indeed, during the devlink removals performed at step 1, the removal itself releasing the device (and the attached of_node) is done by a job queued in a workqueue and so, it is done asynchronously with respect to function calls. When the warning is present, of_node_put() will be called but wrongly too late from the workqueue job. In order to be sure that any ongoing devlink removals are done before the of_node destruction, synchronize the of_changeset_destroy() with the devlink removals.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-20 15:13 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d007150b4e15bfcb8d36cfd88a5645d42e44d383 , < 3127b2ee50c424a96eb3559fbb7b43cf0b111c7a (git)
Affected: 80dd33cf72d1ab4f0af303f1fa242c6d6c8d328f , < 3ee2424107546d882e1ddd75333ca9c32879908c (git)
Affected: 80dd33cf72d1ab4f0af303f1fa242c6d6c8d328f , < 7b6df050c45a1ea158fd50bc32a8e1447dd1e951 (git)
Affected: 80dd33cf72d1ab4f0af303f1fa242c6d6c8d328f , < 801c8b8ec5bfb3519566dff16a5ecd48302fca82 (git)
Affected: 80dd33cf72d1ab4f0af303f1fa242c6d6c8d328f , < ae6d76e4f06c37a623e357e79d49b17411db6f5c (git)
Affected: 80dd33cf72d1ab4f0af303f1fa242c6d6c8d328f , < 8917e7385346bd6584890ed362985c219fe6ae84 (git)
Affected: 252c23915546863685ecc68cb3a39e7e80c6c9d4 (git)
Affected: 5.10.42 , < 5.10.215 (semver)
Affected: 5.12.9 , < 5.13 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.10.215 , ≤ 5.10.* (semver)
Unaffected: 5.15.154 , ≤ 5.15.* (semver)
Unaffected: 6.1.85 , ≤ 6.1.* (semver)
Unaffected: 6.6.26 , ≤ 6.6.* (semver)
Unaffected: 6.8.5 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: of:dynamic: Sincronizar of_changeset_destroy() con las eliminaciones de devlink En la siguiente secuencia: 1) of_platform_depopulate() 2) of_overlay_remove() Durante el paso 1, los dispositivos se destruyen y los devlinks son remoto. Durante el paso 2, los nodos OF se destruyen, pero __of_changeset_entry_destroy() puede generar advertencias relacionadas con la falta de of_node_put(): ERROR: p\u00e9rdida de memoria, recuento esperado 1 en lugar de 2... De hecho, durante las eliminaciones de devlink realizadas en el paso 1, la eliminaci\u00f3n La liberaci\u00f3n del dispositivo (y el of_node adjunto) se realiza mediante un trabajo en cola en una cola de trabajo y, por lo tanto, se realiza de forma asincr\u00f3nica con respecto a las llamadas a funciones. Cuando la advertencia est\u00e1 presente, se llamar\u00e1 a of_node_put() pero err\u00f3neamente demasiado tarde desde el trabajo de la cola de trabajo. Para asegurarse de que cualquier eliminaci\u00f3n de devlink en curso se realice antes de la destrucci\u00f3n de of_node, sincronice of_changeset_destroy() con las eliminaciones de devlink."
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                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.215",
                      "versionStartIncluding": "5.10.42",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.154",
                      "versionStartIncluding": "5.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.85",
                      "versionStartIncluding": "5.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.26",
                      "versionStartIncluding": "5.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.8.5",
                      "versionStartIncluding": "5.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.9",
                      "versionStartIncluding": "5.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.12.9",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: dynamic: Synchronize of_changeset_destroy() with the devlink removals\n\nIn the following sequence:\n  1) of_platform_depopulate()\n  2) of_overlay_remove()\n\nDuring the step 1, devices are destroyed and devlinks are removed.\nDuring the step 2, OF nodes are destroyed but\n__of_changeset_entry_destroy() can raise warnings related to missing\nof_node_put():\n  ERROR: memory leak, expected refcount 1 instead of 2 ...\n\nIndeed, during the devlink removals performed at step 1, the removal\nitself releasing the device (and the attached of_node) is done by a job\nqueued in a workqueue and so, it is done asynchronously with respect to\nfunction calls.\nWhen the warning is present, of_node_put() will be called but wrongly\ntoo late from the workqueue job.\n\nIn order to be sure that any ongoing devlink removals are done before\nthe of_node destruction, synchronize the of_changeset_destroy() with the\ndevlink removals."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - The vulnerable sequence is reached through local device-tree overlay teardown (driver unbind via sysfs, PCI/FPGA hot-unplug handling, DLPAR), not through any network or remote protocol input. No remote peer data reaches drivers/of/dynamic.c.\nAC:L - The devlink removal job is queued asynchronously and of_platform_depopulate() returns immediately before of_overlay_remove() runs, so the outstanding-reference condition occurs reliably (the reporter and testers hit it consistently), and the teardown can be repeated in a loop via unbind/rebind cycles.\nPR:L - No capability check guards the racy path; entry is device removal/unbind, which on embedded and hotplug-capable deployments is initiated by device events or low-privileged management paths rather than gated authentication. Choosing the higher-severity option where the privilege boundary is deployment-dependent.\nUI:N - The overlay teardown is initiated by the attacker\u0027s own action (unbind/hot-unplug) or by an autonomous device event; no separate victim needs to perform any operation.\nS:U - The corrupted objects (struct device_node, kobject refcounts, kernel heap) all live within the kernel\u0027s own security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:H - When a leaked child node\u0027s parent device_node has already been freed, of_node_release()\u0027s %pOF print dereferences the freed parent and its freed full_name pointer, rendering reclaimed heap contents into the kernel log \u2014 a use-after-free read of attacker-influenceable memory.\nI:H - The same path performs kobject_get()/refcount_inc() on the freed parent object, writing into memory that can be reclaimed by an attacker-sprayed allocation during the asynchronous workqueue window, giving a use-after-free write primitive.\nA:H - Every affected teardown permanently leaks device_node memory plus its properties, and the resulting refcount-0 nodes left in fwnode link lists and dangling parent pointers produce refcount_t warnings and freed-memory dereferences that oops (and panic under panic_on_warn); repeated hot-unplug cycles drive unbounded memory exhaustion."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:30:36.996Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/3127b2ee50c424a96eb3559fbb7b43cf0b111c7a"
            },
            {
              "url": "https://git.kernel.org/stable/c/3ee2424107546d882e1ddd75333ca9c32879908c"
            },
            {
              "url": "https://git.kernel.org/stable/c/7b6df050c45a1ea158fd50bc32a8e1447dd1e951"
            },
            {
              "url": "https://git.kernel.org/stable/c/801c8b8ec5bfb3519566dff16a5ecd48302fca82"
            },
            {
              "url": "https://git.kernel.org/stable/c/ae6d76e4f06c37a623e357e79d49b17411db6f5c"
            },
            {
              "url": "https://git.kernel.org/stable/c/8917e7385346bd6584890ed362985c219fe6ae84"
            }
          ],
          "title": "of: dynamic: Synchronize of_changeset_destroy() with the devlink removals",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-35879",
        "datePublished": "2024-05-19T08:34:36.450Z",
        "dateReserved": "2024-05-17T13:50:33.111Z",
        "dateUpdated": "2026-08-05T11:30:36.996Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


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.