FKIE_CVE-2023-54321

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-06-17 06:47
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: driver core: fix potential null-ptr-deref in device_add() I got the following null-ptr-deref report while doing fault injection test: BUG: kernel NULL pointer dereference, address: 0000000000000058 CPU: 2 PID: 278 Comm: 37-i2c-ds2482 Tainted: G B W N 6.1.0-rc3+ RIP: 0010:klist_put+0x2d/0xd0 Call Trace: <TASK> klist_remove+0xf1/0x1c0 device_release_driver_internal+0x196/0x210 bus_remove_device+0x1bd/0x240 device_add+0xd3d/0x1100 w1_add_master_device+0x476/0x490 [wire] ds2482_probe+0x303/0x3e0 [ds2482] This is how it happened: w1_alloc_dev() // The dev->driver is set to w1_master_driver. memcpy(&dev->dev, device, sizeof(struct device)); device_add() bus_add_device() dpm_sysfs_add() // It fails, calls bus_remove_device. // error path bus_remove_device() // The dev->driver is not null, but driver is not bound. __device_release_driver() klist_remove(&dev->p->knode_driver) <-- It causes null-ptr-deref. // normal path bus_probe_device() // It's not called yet. device_bind_driver() If dev->driver is set, in the error path after calling bus_add_device() in device_add(), bus_remove_device() is called, then the device will be detached from driver. But device_bind_driver() is not called yet, so it causes null-ptr-deref while access the 'knode_driver'. To fix this, set dev->driver to null in the error path before calling bus_remove_device().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/17982304806c5c10924e73f7ca5556e0d7378452Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2c59650d078b1b3f1ea50d5f8ee9fcc537dc02d3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7cf515bf9e8c2908dc170ecf2df117162a16c9c5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/97aa8fb74bbe9aaf4ed5962a784f73b071bd16bfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f6837f34a34973ef6600c08195ed300e24e97317Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/base/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "97aa8fb74bbe9aaf4ed5962a784f73b071bd16bf",
              "status": "affected",
              "version": "57eee3d23e8833ca18708b374c648235691942ba",
              "versionType": "git"
            },
            {
              "lessThan": "2c59650d078b1b3f1ea50d5f8ee9fcc537dc02d3",
              "status": "affected",
              "version": "57eee3d23e8833ca18708b374c648235691942ba",
              "versionType": "git"
            },
            {
              "lessThan": "7cf515bf9e8c2908dc170ecf2df117162a16c9c5",
              "status": "affected",
              "version": "57eee3d23e8833ca18708b374c648235691942ba",
              "versionType": "git"
            },
            {
              "lessThan": "17982304806c5c10924e73f7ca5556e0d7378452",
              "status": "affected",
              "version": "57eee3d23e8833ca18708b374c648235691942ba",
              "versionType": "git"
            },
            {
              "lessThan": "f6837f34a34973ef6600c08195ed300e24e97317",
              "status": "affected",
              "version": "57eee3d23e8833ca18708b374c648235691942ba",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/base/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.26"
            },
            {
              "lessThan": "2.6.26",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.249",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.99",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9D348797-6EB9-4DCA-AB7C-43C12A032085",
              "versionEndExcluding": "5.10.249",
              "versionStartIncluding": "2.6.26",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5B8B2AC9-2F31-4A0F-96F5-7E26B50B27BB",
              "versionEndExcluding": "5.15.99",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0FD95FDA-6525-4B13-B3FB-49D9995FD8ED",
              "versionEndExcluding": "6.1.16",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "88C67289-22AD-4CA9-B202-5F5A80E5BA4B",
              "versionEndExcluding": "6.2.3",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndriver core: fix potential null-ptr-deref in device_add()\n\nI got the following null-ptr-deref report while doing fault injection test:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000058\nCPU: 2 PID: 278 Comm: 37-i2c-ds2482 Tainted: G    B   W        N 6.1.0-rc3+\nRIP: 0010:klist_put+0x2d/0xd0\nCall Trace:\n \u003cTASK\u003e\n klist_remove+0xf1/0x1c0\n device_release_driver_internal+0x196/0x210\n bus_remove_device+0x1bd/0x240\n device_add+0xd3d/0x1100\n w1_add_master_device+0x476/0x490 [wire]\n ds2482_probe+0x303/0x3e0 [ds2482]\n\nThis is how it happened:\n\nw1_alloc_dev()\n  // The dev-\u003edriver is set to w1_master_driver.\n  memcpy(\u0026dev-\u003edev, device, sizeof(struct device));\n  device_add()\n    bus_add_device()\n    dpm_sysfs_add() // It fails, calls bus_remove_device.\n\n    // error path\n    bus_remove_device()\n      // The dev-\u003edriver is not null, but driver is not bound.\n      __device_release_driver()\n        klist_remove(\u0026dev-\u003ep-\u003eknode_driver) \u003c-- It causes null-ptr-deref.\n\n    // normal path\n    bus_probe_device() // It\u0027s not called yet.\n      device_bind_driver()\n\nIf dev-\u003edriver is set, in the error path after calling bus_add_device()\nin device_add(), bus_remove_device() is called, then the device will be\ndetached from driver. But device_bind_driver() is not called yet, so it\ncauses null-ptr-deref while access the \u0027knode_driver\u0027. To fix this, set\ndev-\u003edriver to null in the error path before calling bus_remove_device()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nn\u00facleo del controlador: corrige una potencial desreferencia de puntero nulo en device_add()\n\nRecib\u00ed el siguiente informe de desreferencia de puntero nulo mientras realizaba una prueba de inyecci\u00f3n de fallos:\n\nERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000058\nCPU: 2 PID: 278 Comm: 37-i2c-ds2482 Tainted: G B W N 6.1.0-rc3+\nRIP: 0010:klist_put+0x2d/0xd0\nTraza de llamadas:\n \n klist_remove+0xf1/0x1c0\n device_release_driver_internal+0x196/0x210\n bus_remove_device+0x1bd/0x240\n device_add+0xd3d/0x1100\n w1_add_master_device+0x476/0x490 [wire]\n ds2482_probe+0x303/0x3e0 [ds2482]\n\nAs\u00ed es como ocurri\u00f3:\n\nw1_alloc_dev()\n  // El dev-\u0026gt;driver se establece en w1_master_driver.\n  memcpy(\u0026amp;dev-\u0026gt;dev, device, sizeof(struct device));\n  device_add()\n    bus_add_device()\n    dpm_sysfs_add() // Falla, llama a bus_remove_device.\n\n    // ruta de error\n    bus_remove_device()\n      // El dev-\u0026gt;driver no es nulo, pero el controlador no est\u00e1 enlazado.\n      __device_release_driver()\n        klist_remove(\u0026amp;dev-\u0026gt;p-\u0026gt;knode_driver) \u0026lt;-- Causa una desreferencia de puntero nulo.\n\n    // ruta normal\n    bus_probe_device() // A\u00fan no se ha llamado.\n      device_bind_driver()\n\nSi dev-\u0026gt;driver est\u00e1 establecido, en la ruta de error despu\u00e9s de llamar a bus_add_device() en device_add(), se llama a bus_remove_device(), entonces el dispositivo ser\u00e1 desvinculado del controlador. Pero device_bind_driver() a\u00fan no se ha llamado, por lo que causa una desreferencia de puntero nulo al acceder a \u0027knode_driver\u0027. Para solucionar esto, establece dev-\u0026gt;driver en nulo en la ruta de error antes de llamar a bus_remove_device()."
    }
  ],
  "id": "CVE-2023-54321",
  "lastModified": "2026-06-17T06:47:13.370",
  "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": "2025-12-30T13:16:21.410",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/17982304806c5c10924e73f7ca5556e0d7378452"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2c59650d078b1b3f1ea50d5f8ee9fcc537dc02d3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/7cf515bf9e8c2908dc170ecf2df117162a16c9c5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/97aa8fb74bbe9aaf4ed5962a784f73b071bd16bf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f6837f34a34973ef6600c08195ed300e24e97317"
    }
  ],
  "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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