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CVE-2026-53222

Estado: AnalizadaMedia (5.5)—

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

ptp: ocp: fix resource freeing order

Commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to disable events") added a call to ptp_disable_all_events() which changes the configuration of pins if they support EXTTS events. In ptp_ocp_detach() pins resources are freed before ptp_clock_unregister() and it leads to use-after-free during driver removal. Fix it by changing the order of free/unregister calls. To avoid irq handler running on the other core while ptp device unregistering, call synchronize_irq() after HW is configured to stop producing irqs and no irqs are in-flight.

CVSS

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)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-53222",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
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              "status": "unaffected",
              "version": "0",
              "lessThan": "6.18",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
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            {
              "status": "unaffected",
              "version": "7.1",
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          "programFiles": [
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  "published": "2026-06-25T09:16:39.980",
  "references": [
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      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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      "url": "https://git.kernel.org/stable/c/aa03698bb28d3be5ee180adb185395054b342b04",
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  "vulnStatus": "Analyzed",
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-401"
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nptp: ocp: fix resource freeing order\n\nCommit a60fc3294a37 (\"ptp: rework ptp_clock_unregister() to disable\nevents\") added a call to ptp_disable_all_events() which changes the\nconfiguration of pins if they support EXTTS events. In ptp_ocp_detach()\npins resources are freed before ptp_clock_unregister() and it leads to\nuse-after-free during driver removal. Fix it by changing the order of\nfree/unregister calls. To avoid irq handler running on the other core\nwhile ptp device unregistering, call synchronize_irq() after HW is\nconfigured to stop producing irqs and no irqs are in-flight."
    }
  ],
  "lastModified": "2026-07-02T20:47:32.200",
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