FKIE_CVE-2024-53131

Vulnerability from fkie_nvd - Published: 2024-12-04 15:15 - Updated: 2026-06-17 08:08
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: nilfs2: fix null-ptr-deref in block_touch_buffer tracepoint Patch series "nilfs2: fix null-ptr-deref bugs on block tracepoints". This series fixes null pointer dereference bugs that occur when using nilfs2 and two block-related tracepoints. This patch (of 2): It has been reported that when using "block:block_touch_buffer" tracepoint, touch_buffer() called from __nilfs_get_folio_block() causes a NULL pointer dereference, or a general protection fault when KASAN is enabled. This happens because since the tracepoint was added in touch_buffer(), it references the dev_t member bh->b_bdev->bd_dev regardless of whether the buffer head has a pointer to a block_device structure. In the current implementation, the block_device structure is set after the function returns to the caller. Here, touch_buffer() is used to mark the folio/page that owns the buffer head as accessed, but the common search helper for folio/page used by the caller function was optimized to mark the folio/page as accessed when it was reimplemented a long time ago, eliminating the need to call touch_buffer() here in the first place. So this solves the issue by eliminating the touch_buffer() call itself.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/085556bf8c70e2629e02e79268dac3016a08b8bfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/19c71cdd77973f99a9adc3190130bc3aa7ae5423
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b2a4fd9bbee77afdd3ed5a05a0c02b6cde8d3b9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/59b49ca67cca7b007a5afd3de0283c8008157665Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6438f3f42cda825f6f59b4e45ac3a1da28a6f2c9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77e47f89d32c2d72eb33d0becbce7abe14d061f4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b017697a517f8779ada4e8ce1c2c75dbf60a2636
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cd45e963e44b0f10d90b9e6c0e8b4f47f3c92471Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nilfs2/page.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "085556bf8c70e2629e02e79268dac3016a08b8bf",
              "status": "affected",
              "version": "5305cb830834549b9203ad4d009ad5483c5e293f",
              "versionType": "git"
            },
            {
              "lessThan": "6438f3f42cda825f6f59b4e45ac3a1da28a6f2c9",
              "status": "affected",
              "version": "5305cb830834549b9203ad4d009ad5483c5e293f",
              "versionType": "git"
            },
            {
              "lessThan": "b017697a517f8779ada4e8ce1c2c75dbf60a2636",
              "status": "affected",
              "version": "5305cb830834549b9203ad4d009ad5483c5e293f",
              "versionType": "git"
            },
            {
              "lessThan": "19c71cdd77973f99a9adc3190130bc3aa7ae5423",
              "status": "affected",
              "version": "5305cb830834549b9203ad4d009ad5483c5e293f",
              "versionType": "git"
            },
            {
              "lessThan": "3b2a4fd9bbee77afdd3ed5a05a0c02b6cde8d3b9",
              "status": "affected",
              "version": "5305cb830834549b9203ad4d009ad5483c5e293f",
              "versionType": "git"
            },
            {
              "lessThan": "59b49ca67cca7b007a5afd3de0283c8008157665",
              "status": "affected",
              "version": "5305cb830834549b9203ad4d009ad5483c5e293f",
              "versionType": "git"
            },
            {
              "lessThan": "77e47f89d32c2d72eb33d0becbce7abe14d061f4",
              "status": "affected",
              "version": "5305cb830834549b9203ad4d009ad5483c5e293f",
              "versionType": "git"
            },
            {
              "lessThan": "cd45e963e44b0f10d90b9e6c0e8b4f47f3c92471",
              "status": "affected",
              "version": "5305cb830834549b9203ad4d009ad5483c5e293f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/nilfs2/page.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.9"
            },
            {
              "lessThan": "3.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.325",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.287",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.231",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.174",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.119",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B9F07E74-2989-4705-AED1-FEACA2FEF716",
              "versionEndExcluding": "6.1.119",
              "versionStartIncluding": "3.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DC8AE946-6593-4D8D-863A-0BC137CF667F",
              "versionEndExcluding": "6.6.63",
              "versionStartIncluding": "6.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5D7D3F96-FD78-48BB-9935-3CD41775FEAA",
              "versionEndExcluding": "6.11.10",
              "versionStartIncluding": "6.11.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix null-ptr-deref in block_touch_buffer tracepoint\n\nPatch series \"nilfs2: fix null-ptr-deref bugs on block tracepoints\".\n\nThis series fixes null pointer dereference bugs that occur when using\nnilfs2 and two block-related tracepoints.\n\n\nThis patch (of 2):\n\nIt has been reported that when using \"block:block_touch_buffer\"\ntracepoint, touch_buffer() called from __nilfs_get_folio_block() causes a\nNULL pointer dereference, or a general protection fault when KASAN is\nenabled.\n\nThis happens because since the tracepoint was added in touch_buffer(), it\nreferences the dev_t member bh-\u003eb_bdev-\u003ebd_dev regardless of whether the\nbuffer head has a pointer to a block_device structure.  In the current\nimplementation, the block_device structure is set after the function\nreturns to the caller.\n\nHere, touch_buffer() is used to mark the folio/page that owns the buffer\nhead as accessed, but the common search helper for folio/page used by the\ncaller function was optimized to mark the folio/page as accessed when it\nwas reimplemented a long time ago, eliminating the need to call\ntouch_buffer() here in the first place.\n\nSo this solves the issue by eliminating the touch_buffer() call itself."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: fix null-ptr-deref in block_touch_buffer tracepoint Serie de parches \"nilfs2: fix null-ptr-deref bugs on block tracepoints\". Esta serie corrige errores de desreferencia de puntero nulo que ocurren al usar nilfs2 y dos puntos de seguimiento relacionados con bloques. Este parche (de 2): Se ha informado que al usar el punto de seguimiento \"block:block_touch_buffer\", touch_buffer() llamado desde __nilfs_get_folio_block() causa una desreferencia de puntero NULL o un error de protecci\u00f3n general cuando KASAN est\u00e1 habilitado. Esto sucede porque, dado que el punto de seguimiento se agreg\u00f3 en touch_buffer(), hace referencia al miembro dev_t bh-\u0026gt;b_bdev-\u0026gt;bd_dev independientemente de si el cabezal del b\u00fafer tiene un puntero a una estructura block_device. En la implementaci\u00f3n actual, la estructura block_device se establece despu\u00e9s de que la funci\u00f3n regresa al llamador. Aqu\u00ed, touch_buffer() se utiliza para marcar el folio/p\u00e1gina que posee el encabezado del b\u00fafer como accedido, pero el asistente de b\u00fasqueda com\u00fan para folio/p\u00e1gina utilizado por la funci\u00f3n de llamada se optimiz\u00f3 para marcar el folio/p\u00e1gina como accedido cuando se reimplement\u00f3 hace mucho tiempo, eliminando la necesidad de llamar a touch_buffer() aqu\u00ed en primer lugar. Por lo tanto, esto resuelve el problema al eliminar la llamada a touch_buffer() en s\u00ed."
    }
  ],
  "id": "CVE-2024-53131",
  "lastModified": "2026-06-17T08:08:22.760",
  "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": "2024-12-04T15:15:13.090",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/085556bf8c70e2629e02e79268dac3016a08b8bf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/19c71cdd77973f99a9adc3190130bc3aa7ae5423"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3b2a4fd9bbee77afdd3ed5a05a0c02b6cde8d3b9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/59b49ca67cca7b007a5afd3de0283c8008157665"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6438f3f42cda825f6f59b4e45ac3a1da28a6f2c9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/77e47f89d32c2d72eb33d0becbce7abe14d061f4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b017697a517f8779ada4e8ce1c2c75dbf60a2636"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/cd45e963e44b0f10d90b9e6c0e8b4f47f3c92471"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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