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GHSA-HGQM-WJMP-79VJ

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32

Details

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

riscv: cacheinfo: Fix node reference leak in populate_cache_leaves

Currently, the while loop drops the reference to prev in each iteration. If the loop terminates early due to a break, the final of_node_put(np) correctly drops the reference to the current node.

However, if the loop terminates naturally because np == NULL, calling of_node_put(np) is a no-op. This leaves the last valid node stored in prev without its reference dropped, resulting in a node reference leak.

Fix this by changing the final of_node_put(np) to of_node_put(prev).

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72179"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:21:36Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: cacheinfo: Fix node reference leak in populate_cache_leaves\n\nCurrently, the while loop drops the reference to prev in each iteration.\nIf the loop terminates early due to a break, the final of_node_put(np)\ncorrectly drops the reference to the current node.\n\nHowever, if the loop terminates naturally because np == NULL, calling\nof_node_put(np) is a no-op. This leaves the last valid node stored in\nprev without its reference dropped, resulting in a node reference leak.\n\nFix this by changing the final `of_node_put(np)` to `of_node_put(prev)`.",
  "id": "GHSA-hgqm-wjmp-79vj",
  "modified": "2026-08-15T06:32:15Z",
  "published": "2026-08-15T06:32:14Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72179"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2560c97f63bb99b26d9f19b23a4f66ea24c9dc14"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/36e4843fe39ea2f17f4de6d59fba26271916c184"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51afb7da697b698996351740b4f39fb05ce2afd4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/880ac50b0bfae06d7ab5f1843253adfb86aa173a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf4a195f063b0a0805c1417f6aad1dd32ea48f0f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f322955d9a1c344ed943752f05aacea7bc22e025"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-72179 (GCVE-0-2026-72179)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:53 – Updated: 2026-08-17 05:09

Title

riscv: cacheinfo: Fix node reference leak in populate_cache_leaves

Summary

In the Linux kernel, the following vulnerability has been resolved: riscv: cacheinfo: Fix node reference leak in populate_cache_leaves Currently, the while loop drops the reference to prev in each iteration. If the loop terminates early due to a break, the final of_node_put(np) correctly drops the reference to the current node. However, if the loop terminates naturally because np == NULL, calling of_node_put(np) is a no-op. This leaves the last valid node stored in prev without its reference dropped, resulting in a node reference leak. Fix this by changing the final `of_node_put(np)` to `of_node_put(prev)`.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/2560c97f63bb99b26…
https://git.kernel.org/stable/c/51afb7da697b69899…
https://git.kernel.org/stable/c/880ac50b0bfae06d7…
https://git.kernel.org/stable/c/f322955d9a1c344ed…
https://git.kernel.org/stable/c/36e4843fe39ea2f17…
https://git.kernel.org/stable/c/bf4a195f063b0a080…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f , < 2560c97f63bb99b26d9f19b23a4f66ea24c9dc14 (git) Affected: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f , < 51afb7da697b698996351740b4f39fb05ce2afd4 (git) Affected: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f , < 880ac50b0bfae06d7ab5f1843253adfb86aa173a (git) Affected: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f , < f322955d9a1c344ed943752f05aacea7bc22e025 (git) Affected: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f , < 36e4843fe39ea2f17f4de6d59fba26271916c184 (git) Affected: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f , < bf4a195f063b0a0805c1417f6aad1dd32ea48f0f (git)
Linux	Linux	Affected: 5.0 Unaffected: 0 , < 5.0 (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
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        {
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        }
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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.

Detection rules are retrieved from Rulezet.

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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GHSA-HGQM-WJMP-79VJ

CVE-2026-72179 (GCVE-0-2026-72179)

Tags

Sightings

Nomenclature