fkie_cve-2025-38269
Vulnerability from fkie_nvd
Published
2025-07-10 08:15
Modified
2025-11-20 16:39
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: exit after state insertion failure at btrfs_convert_extent_bit() If insert_state() state failed it returns an error pointer and we call extent_io_tree_panic() which will trigger a BUG() call. However if CONFIG_BUG is disabled, which is an uncommon and exotic scenario, then we fallthrough and call cache_state() which will dereference the error pointer, resulting in an invalid memory access. So jump to the 'out' label after calling extent_io_tree_panic(), it also makes the code more clear besides dealing with the exotic scenario where CONFIG_BUG is disabled.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3bf179e36da917c5d9bec71c714573ed1649b7c1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/58c50f45e1821a04d61b62514f9bd34afe67c622Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8d9d32088e304e2bc444a3087cab0bbbd9951866Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FC7FC49C-1039-4539-9B46-E4246F6225B4",
              "versionEndExcluding": "6.12.34",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0541C761-BD5E-4C1A-8432-83B375D7EB92",
              "versionEndExcluding": "6.15.3",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: exit after state insertion failure at btrfs_convert_extent_bit()\n\nIf insert_state() state failed it returns an error pointer and we call\nextent_io_tree_panic() which will trigger a BUG() call. However if\nCONFIG_BUG is disabled, which is an uncommon and exotic scenario, then\nwe fallthrough and call cache_state() which will dereference the error\npointer, resulting in an invalid memory access.\n\nSo jump to the \u0027out\u0027 label after calling extent_io_tree_panic(), it also\nmakes the code more clear besides dealing with the exotic scenario where\nCONFIG_BUG is disabled."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: salida tras fallo de inserci\u00f3n de estado en btrfs_convert_extent_bit(). Si el estado insert_state() falla, devuelve un puntero de error y se llama a extent_io_tree_panic(), lo que activa una llamada a BUG(). Sin embargo, si CONFIG_BUG est\u00e1 deshabilitado (un escenario inusual y ex\u00f3tico), se pasa a la siguiente etapa y se llama a cache_state(), lo que desreferencia el puntero de error, lo que resulta en un acceso no v\u00e1lido a memoria. Por lo tanto, al saltar a la etiqueta \"out\" despu\u00e9s de llamar a extent_io_tree_panic(), se aclara el c\u00f3digo, adem\u00e1s de abordar el escenario ex\u00f3tico donde CONFIG_BUG est\u00e1 deshabilitado."
    }
  ],
  "id": "CVE-2025-38269",
  "lastModified": "2025-11-20T16:39:51.100",
  "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": "2025-07-10T08:15:25.083",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3bf179e36da917c5d9bec71c714573ed1649b7c1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/58c50f45e1821a04d61b62514f9bd34afe67c622"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8d9d32088e304e2bc444a3087cab0bbbd9951866"
    }
  ],
  "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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