FKIE_CVE-2024-39495

Vulnerability from fkie_nvd - Published: 2024-07-12 13:15 - Updated: 2026-06-17 07:42
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: greybus: Fix use-after-free bug in gb_interface_release due to race condition. In gb_interface_create, &intf->mode_switch_completion is bound with gb_interface_mode_switch_work. Then it will be started by gb_interface_request_mode_switch. Here is the relevant code. if (!queue_work(system_long_wq, &intf->mode_switch_work)) { ... } If we call gb_interface_release to make cleanup, there may be an unfinished work. This function will call kfree to free the object "intf". However, if gb_interface_mode_switch_work is scheduled to run after kfree, it may cause use-after-free error as gb_interface_mode_switch_work will use the object "intf". The possible execution flow that may lead to the issue is as follows: CPU0 CPU1 | gb_interface_create | gb_interface_request_mode_switch gb_interface_release | kfree(intf) (free) | | gb_interface_mode_switch_work | mutex_lock(&intf->mutex) (use) Fix it by canceling the work before kfree.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/03ea2b129344152157418929f06726989efc0445Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b8fba38bdfb848fac52e71270b2aa3538c996eaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220cePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fb071f5c75d4b1c177824de74ee75f9dd34123b9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/03ea2b129344152157418929f06726989efc0445Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0b8fba38bdfb848fac52e71270b2aa3538c996eaPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220cePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dcPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fb071f5c75d4b1c177824de74ee75f9dd34123b9Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
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          "product": "Linux",
          "programFiles": [
            "drivers/greybus/interface.c"
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        },
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          "vendor": "Linux",
          "versions": [
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              "version": "4.9"
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              "version": "0",
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              "version": "6.9.6",
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              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
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          ]
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      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
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        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5EBA530D-458E-447C-8744-13D4429CCC4A",
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              "vulnerable": true
            },
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          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngreybus: Fix use-after-free bug in gb_interface_release due to race condition.\n\nIn gb_interface_create, \u0026intf-\u003emode_switch_completion is bound with\ngb_interface_mode_switch_work. Then it will be started by\ngb_interface_request_mode_switch. Here is the relevant code.\nif (!queue_work(system_long_wq, \u0026intf-\u003emode_switch_work)) {\n\t...\n}\n\nIf we call gb_interface_release to make cleanup, there may be an\nunfinished work. This function will call kfree to free the object\n\"intf\". However, if gb_interface_mode_switch_work is scheduled to\nrun after kfree, it may cause use-after-free error as\ngb_interface_mode_switch_work will use the object \"intf\".\nThe possible execution flow that may lead to the issue is as follows:\n\nCPU0                            CPU1\n\n                            |   gb_interface_create\n                            |   gb_interface_request_mode_switch\ngb_interface_release        |\nkfree(intf) (free)          |\n                            |   gb_interface_mode_switch_work\n                            |   mutex_lock(\u0026intf-\u003emutex) (use)\n\nFix it by canceling the work before kfree."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: greybus: corrigi\u00f3 el error de use-after-free en gb_interface_release debido a la condici\u00f3n de ejecuci\u00f3n. En gb_interface_create, \u0026amp;intf-\u0026gt;mode_switch_completion est\u00e1 vinculado con gb_interface_mode_switch_work. Luego lo iniciar\u00e1 gb_interface_request_mode_switch. Aqu\u00ed est\u00e1 el c\u00f3digo relevante. if (!queue_work(system_long_wq, \u0026amp;intf-\u0026gt;mode_switch_work)) { ... } Si llamamos a gb_interface_release para realizar la limpieza, es posible que haya un trabajo sin terminar. Esta funci\u00f3n llamar\u00e1 a kfree para liberar el objeto \"intf\". Sin embargo, si gb_interface_mode_switch_work est\u00e1 programado para ejecutarse despu\u00e9s de kfree, puede causar un error de use-after-free ya que gb_interface_mode_switch_work usar\u00e1 el objeto \"intf\". El posible flujo de ejecuci\u00f3n que puede provocar el problema es el siguiente: CPU0 CPU1 | gb_interface_create | gb_interface_request_mode_switch gb_interface_release | kfree(intf) (gratis) | | gb_interface_mode_switch_work | mutex_lock(\u0026amp;intf-\u0026gt;mutex) (uso) Solucionarlo cancelando el trabajo antes de kfree."
    }
  ],
  "id": "CVE-2024-39495",
  "lastModified": "2026-06-17T07:42:02.660",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-39495",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-08-16T04:02:11.550513Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-07-12T13:15:12.183",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/03ea2b129344152157418929f06726989efc0445"
    },
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    },
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    },
    {
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      "url": "https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce"
    },
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
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    },
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      "tags": [
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      "url": "https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dc"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/fb071f5c75d4b1c177824de74ee75f9dd34123b9"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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