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CVE-2026-72179

Estado: RecibidaSin puntuar—

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)`.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-72179",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "94f9bf118f1e294b3f2092f8bde02860f5e3ea3f",
              "lessThan": "2560c97f63bb99b26d9f19b23a4f66ea24c9dc14",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "94f9bf118f1e294b3f2092f8bde02860f5e3ea3f",
              "lessThan": "51afb7da697b698996351740b4f39fb05ce2afd4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "94f9bf118f1e294b3f2092f8bde02860f5e3ea3f",
              "lessThan": "880ac50b0bfae06d7ab5f1843253adfb86aa173a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "94f9bf118f1e294b3f2092f8bde02860f5e3ea3f",
              "lessThan": "f322955d9a1c344ed943752f05aacea7bc22e025",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "94f9bf118f1e294b3f2092f8bde02860f5e3ea3f",
              "lessThan": "36e4843fe39ea2f17f4de6d59fba26271916c184",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "94f9bf118f1e294b3f2092f8bde02860f5e3ea3f",
              "lessThan": "bf4a195f063b0a0805c1417f6aad1dd32ea48f0f",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/riscv/kernel/cacheinfo.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/riscv/kernel/cacheinfo.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:21:36.180",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2560c97f63bb99b26d9f19b23a4f66ea24c9dc14",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/36e4843fe39ea2f17f4de6d59fba26271916c184",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/51afb7da697b698996351740b4f39fb05ce2afd4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/880ac50b0bfae06d7ab5f1843253adfb86aa173a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bf4a195f063b0a0805c1417f6aad1dd32ea48f0f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f322955d9a1c344ed943752f05aacea7bc22e025",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "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)`."
    }
  ],
  "lastModified": "2026-08-17T06:18:18.393",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}