Vulnerability-Lookup

GHSA-8WM5-MR28-C23R

Vulnerability from github – Published: 2026-10-18 18:32 – Updated: 2026-10-18 18:32

Details

In the Linux kernel, the following vulnerability has been resolved:

of/overlay: put property on deadprops only after changeset add succeeds

add_changeset_property() links a new property of a not-yet-live target node into the node's deadprops list before handing it to of_changeset_add_property(). If that fails, the error path frees the property but leaves the freed pointer linked in deadprops, and of_node_release() frees it a second time when the aborted overlay's node is released.

Record the changeset entry first and link the property into deadprops only on success. of_changeset_add_property() never looks at the node's property lists, so the order of the two steps is otherwise immaterial, and the error path frees a property that nothing references.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98855"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-18T16:17:39Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nof/overlay: put property on deadprops only after changeset add succeeds\n\nadd_changeset_property() links a new property of a not-yet-live\ntarget node into the node\u0027s deadprops list before handing it to\nof_changeset_add_property(). If that fails, the error path frees the\nproperty but leaves the freed pointer linked in deadprops, and\nof_node_release() frees it a second time when the aborted overlay\u0027s\nnode is released.\n\nRecord the changeset entry first and link the property into deadprops\nonly on success. of_changeset_add_property() never looks at the\nnode\u0027s property lists, so the order of the two steps is otherwise\nimmaterial, and the error path frees a property that nothing\nreferences.",
  "id": "GHSA-8wm5-mr28-c23r",
  "modified": "2026-10-18T18:32:06Z",
  "published": "2026-10-18T18:32:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98855"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5857035a3b53a4e7b5a0d5a740189901ece0b079"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7dc6a769153c0457077a0da4888a00f61e66de15"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98855 (GCVE-0-2026-98855)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:51 – Updated: 2026-10-18 15:51

Title

of/overlay: put property on deadprops only after changeset add succeeds

Summary

In the Linux kernel, the following vulnerability has been resolved: of/overlay: put property on deadprops only after changeset add succeeds add_changeset_property() links a new property of a not-yet-live target node into the node's deadprops list before handing it to of_changeset_add_property(). If that fails, the error path frees the property but leaves the freed pointer linked in deadprops, and of_node_release() frees it a second time when the aborted overlay's node is released. Record the changeset entry first and link the property into deadprops only on success. of_changeset_add_property() never looks at the node's property lists, so the order of the two steps is otherwise immaterial, and the error path frees a property that nothing references.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7100 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/d5151496a0a2b19c9…
https://git.kernel.org/stable/c/7dc6a769153c04570…
https://git.kernel.org/stable/c/5857035a3b53a4e7b…
https://git.kernel.org/stable/c/814f2da6995772c07…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: f96278810150fc39085d1872e5b39ea06366d03e , < d5151496a0a2b19c9c0c7b0ebf86b3de55a8fa3a (git) Affected: f96278810150fc39085d1872e5b39ea06366d03e , < 7dc6a769153c0457077a0da4888a00f61e66de15 (git) Affected: f96278810150fc39085d1872e5b39ea06366d03e , < 5857035a3b53a4e7b5a0d5a740189901ece0b079 (git) Affected: f96278810150fc39085d1872e5b39ea06366d03e , < 814f2da6995772c07a7c9c2cc6028b6e3f3ecc9c (git) Affected: b52ca352489be8beb7de3a8181509a0deaf72e21 (git) Affected: 4.19.49 , < 4.20 (semver)
Linux	Linux	Affected: 5.0 Unaffected: 0 , < 5.0 (semver) Unaffected: 6.12.113 , ≤ 6.12.* (semver) Unaffected: 6.18.56 , ≤ 6.18.* (semver) Unaffected: 7.2.10 , ≤ 7.2.* (semver) Unaffected: 7.3-rc6 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/of/overlay.c"
          ],
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "7dc6a769153c0457077a0da4888a00f61e66de15",
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            },
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              "version": "b52ca352489be8beb7de3a8181509a0deaf72e21",
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            },
            {
              "lessThan": "4.20",
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        },
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          "programFiles": [
            "drivers/of/overlay.c"
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              "version": "5.0"
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              "status": "unaffected",
              "version": "0",
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            {
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              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof/overlay: put property on deadprops only after changeset add succeeds\n\nadd_changeset_property() links a new property of a not-yet-live\ntarget node into the node\u0027s deadprops list before handing it to\nof_changeset_add_property(). If that fails, the error path frees the\nproperty but leaves the freed pointer linked in deadprops, and\nof_node_release() frees it a second time when the aborted overlay\u0027s\nnode is released.\n\nRecord the changeset entry first and link the property into deadprops\nonly on success. of_changeset_add_property() never looks at the\nnode\u0027s property lists, so the order of the two steps is otherwise\nimmaterial, and the error path frees a property that nothing\nreferences."
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    "datePublished": "2026-10-18T15:51:09.970Z",
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}

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.

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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.
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