fkie_cve-2025-38243
Vulnerability from fkie_nvd
Published
2025-07-09 11:15
Modified
2025-11-19 15:37
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix invalid inode pointer dereferences during log replay In a few places where we call read_one_inode(), if we get a NULL pointer we end up jumping into an error path, or fallthrough in case of __add_inode_ref(), where we then do something like this: iput(&inode->vfs_inode); which results in an invalid inode pointer that triggers an invalid memory access, resulting in a crash. Fix this by making sure we don't do such dereferences.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2dcf838cf5c2f0f4501edaa1680fcad03618d760Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/401d098f92ea69d8a75f8b845daf343e511681baPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ba8386d662cc51cc5382688bbf7a152b0b0b27cfPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16


To clipboard 

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    {
      "nodes": [
        {
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              "matchCriteriaId": "F4823E88-411C-4CCD-AA8D-3917D070E873",
              "versionEndExcluding": "6.15.5",
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              "vulnerable": true
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix invalid inode pointer dereferences during log replay\n\nIn a few places where we call read_one_inode(), if we get a NULL pointer\nwe end up jumping into an error path, or fallthrough in case of\n__add_inode_ref(), where we then do something like this:\n\n   iput(\u0026inode-\u003evfs_inode);\n\nwhich results in an invalid inode pointer that triggers an invalid memory\naccess, resulting in a crash.\n\nFix this by making sure we don\u0027t do such dereferences."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: correcci\u00f3n de desreferencias de punteros inodos no v\u00e1lidos durante la reproducci\u00f3n de registros. En algunos casos, al ejecutar read_one_inode(), si se obtiene un puntero nulo, se accede a una ruta de error o a una ruta de paso en el caso de __add_inode_ref(). En este caso, se realiza algo como: iput(\u0026amp;inode-\u0026gt;vfs_inode);, lo que genera un puntero inodo no v\u00e1lido que desencadena un acceso no v\u00e1lido a memoria y provoca un fallo. Para solucionar esto, es necesario asegurarse de no realizar dichas desreferencias."
    }
  ],
  "id": "CVE-2025-38243",
  "lastModified": "2025-11-19T15:37:27.197",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-07-09T11:15:26.350",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/2dcf838cf5c2f0f4501edaa1680fcad03618d760"
    },
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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