CVE-2026-72179 (GCVE-0-2026-72179)
Vulnerability from cvelistv5
Published
2026-08-15 05:53
Modified
2026-08-17 05:09
Severity ?
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)`.
References
Impacted products
Vendor Product Version
Linux Linux Version: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f
Version: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f
Version: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f
Version: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f
Version: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f
Version: 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f
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{
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          "programFiles": [
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "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)`."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:09:41.910Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2560c97f63bb99b26d9f19b23a4f66ea24c9dc14"
        },
        {
          "url": "https://git.kernel.org/stable/c/51afb7da697b698996351740b4f39fb05ce2afd4"
        },
        {
          "url": "https://git.kernel.org/stable/c/880ac50b0bfae06d7ab5f1843253adfb86aa173a"
        },
        {
          "url": "https://git.kernel.org/stable/c/f322955d9a1c344ed943752f05aacea7bc22e025"
        },
        {
          "url": "https://git.kernel.org/stable/c/36e4843fe39ea2f17f4de6d59fba26271916c184"
        },
        {
          "url": "https://git.kernel.org/stable/c/bf4a195f063b0a0805c1417f6aad1dd32ea48f0f"
        }
      ],
      "title": "riscv: cacheinfo: Fix node reference leak in populate_cache_leaves",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72179",
    "datePublished": "2026-08-15T05:53:42.980Z",
    "dateReserved": "2026-08-09T03:40:39.910Z",
    "dateUpdated": "2026-08-17T05:09:41.910Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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