Vulnerability-Lookup

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

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/03ea2b129344152157418929f06726989efc0445	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0b8fba38bdfb848fac52e71270b2aa3538c996ea	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fb071f5c75d4b1c177824de74ee75f9dd34123b9	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/03ea2b129344152157418929f06726989efc0445	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/0b8fba38bdfb848fac52e71270b2aa3538c996ea	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dc	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/fb071f5c75d4b1c177824de74ee75f9dd34123b9	Patch
af854a3a-2127-422b-91ae-364da2661108	https://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	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/greybus/interface.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "74cd0a421896b2e07eafe7da4275302bfecef201",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "fb071f5c75d4b1c177824de74ee75f9dd34123b9",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "9a733d69a4a59c2d08620e6589d823c24be773dc",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "0b8fba38bdfb848fac52e71270b2aa3538c996ea",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "03ea2b129344152157418929f06726989efc0445",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/greybus/interface.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.9"
            },
            {
              "lessThan": "4.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.279",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.95",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "product": "linux_kernel",
          "vendor": "linux",
          "versions": [
            {
              "lessThan": "74cd0a421896",
              "status": "affected",
              "version": "0",
              "versionType": "git"
            },
            {
              "lessThan": "2b6bb0b4abfd",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "fb071f5c75d4",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "9a733d69a4a5",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "0b8fba38bdfb",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "03ea2b129344",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            },
            {
              "lessThan": "5c9c5d7f26ac",
              "status": "affected",
              "version": "1da177e4c3f4",
              "versionType": "git"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5EBA530D-458E-447C-8744-13D4429CCC4A",
              "versionEndExcluding": "5.4.279",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "659E1520-6345-41AF-B893-A7C0647585A0",
              "versionEndExcluding": "5.10.221",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "10A39ACC-3005-40E8-875C-98A372D1FFD5",
              "versionEndExcluding": "5.15.162",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D435765D-2766-44F5-B319-F713A13E35CE",
              "versionEndExcluding": "6.1.95",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6F019D15-84C0-416B-8C57-7F51B68992F0",
              "versionEndExcluding": "6.6.35",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0ABBBA1D-F79D-4BDB-AA41-D1EDCC4A6975",
              "versionEndExcluding": "6.9.6",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            }
          ],
          "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"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0b8fba38bdfb848fac52e71270b2aa3538c996ea"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/fb071f5c75d4b1c177824de74ee75f9dd34123b9"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/03ea2b129344152157418929f06726989efc0445"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0b8fba38bdfb848fac52e71270b2aa3538c996ea"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "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"
    }
  ]
}

CVE-2024-39495 (GCVE-0-2024-39495)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:20 – Updated: 2026-08-05 11:33

Title

greybus: Fix use-after-free bug in gb_interface_release due to race condition.

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-16 04:02 UTC

CWE

CWE-416 - Use After Free

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/74cd0a421896b2e07…
https://git.kernel.org/stable/c/2b6bb0b4abfd79b86…
https://git.kernel.org/stable/c/fb071f5c75d4b1c17…
https://git.kernel.org/stable/c/9a733d69a4a59c2d0…
https://git.kernel.org/stable/c/0b8fba38bdfb848fa…
https://git.kernel.org/stable/c/03ea2b12934415215…
https://git.kernel.org/stable/c/5c9c5d7f26acc2c66…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

3 products

Vendor	Product	Version
Linux	Linux	Affected: 55742d2a071a569bf20f90d37b1b5b8a25a3f882 , < 74cd0a421896b2e07eafe7da4275302bfecef201 (git) Affected: 55742d2a071a569bf20f90d37b1b5b8a25a3f882 , < 2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83 (git) Affected: 55742d2a071a569bf20f90d37b1b5b8a25a3f882 , < fb071f5c75d4b1c177824de74ee75f9dd34123b9 (git) Affected: 55742d2a071a569bf20f90d37b1b5b8a25a3f882 , < 9a733d69a4a59c2d08620e6589d823c24be773dc (git) Affected: 55742d2a071a569bf20f90d37b1b5b8a25a3f882 , < 0b8fba38bdfb848fac52e71270b2aa3538c996ea (git) Affected: 55742d2a071a569bf20f90d37b1b5b8a25a3f882 , < 03ea2b129344152157418929f06726989efc0445 (git) Affected: 55742d2a071a569bf20f90d37b1b5b8a25a3f882 , < 5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce (git)
Linux	Linux	Affected: 4.9 Unaffected: 0 , < 4.9 (semver) Unaffected: 5.4.279 , ≤ 5.4.* (semver) Unaffected: 5.10.221 , ≤ 5.10.* (semver) Unaffected: 5.15.162 , ≤ 5.15.* (semver) Unaffected: 6.1.95 , ≤ 6.1.* (semver) Unaffected: 6.6.35 , ≤ 6.6.* (semver) Unaffected: 6.9.6 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)
linux	linux_kernel	Affected: 0 , < 74cd0a421896 (git) Affected: 1da177e4c3f4 , < 2b6bb0b4abfd (git) Affected: 1da177e4c3f4 , < fb071f5c75d4 (git) Affected: 1da177e4c3f4 , < 9a733d69a4a5 (git) Affected: 1da177e4c3f4 , < 0b8fba38bdfb (git) Affected: 1da177e4c3f4 , < 03ea2b129344 (git) Affected: 1da177e4c3f4 , < 5c9c5d7f26ac (git) cpe:2.3:o:linux:linux_kernel::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T21:56:12.660Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/fb071f5c75d4b1c177824de74ee75f9dd34123b9"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dc"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/0b8fba38bdfb848fac52e71270b2aa3538c996ea"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/03ea2b129344152157418929f06726989efc0445"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unaffected",
            "product": "linux_kernel",
            "vendor": "linux",
            "versions": [
              {
                "lessThan": "74cd0a421896",
                "status": "affected",
                "version": "0",
                "versionType": "git"
              },
              {
                "lessThan": "2b6bb0b4abfd",
                "status": "affected",
                "version": "1da177e4c3f4",
                "versionType": "git"
              },
              {
                "lessThan": "fb071f5c75d4",
                "status": "affected",
                "version": "1da177e4c3f4",
                "versionType": "git"
              },
              {
                "lessThan": "9a733d69a4a5",
                "status": "affected",
                "version": "1da177e4c3f4",
                "versionType": "git"
              },
              {
                "lessThan": "0b8fba38bdfb",
                "status": "affected",
                "version": "1da177e4c3f4",
                "versionType": "git"
              },
              {
                "lessThan": "03ea2b129344",
                "status": "affected",
                "version": "1da177e4c3f4",
                "versionType": "git"
              },
              {
                "lessThan": "5c9c5d7f26ac",
                "status": "affected",
                "version": "1da177e4c3f4",
                "versionType": "git"
              }
            ]
          }
        ],
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-39495",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-16T04:02:11.550513Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-20T14:16:51.245Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/greybus/interface.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "74cd0a421896b2e07eafe7da4275302bfecef201",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "fb071f5c75d4b1c177824de74ee75f9dd34123b9",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "9a733d69a4a59c2d08620e6589d823c24be773dc",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "0b8fba38bdfb848fac52e71270b2aa3538c996ea",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "03ea2b129344152157418929f06726989efc0445",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            },
            {
              "lessThan": "5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce",
              "status": "affected",
              "version": "55742d2a071a569bf20f90d37b1b5b8a25a3f882",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/greybus/interface.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.9"
            },
            {
              "lessThan": "4.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.279",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.95",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.10",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.279",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.221",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.162",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.95",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.35",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.9.6",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The attacker-controlled side of the race is the FW_MGMT_IOC_MODE_SWITCH ioctl on the /dev/gb-fw-mgmt-N character device (drivers/staging/greybus/fw-management.c:503), the sole caller of gb_interface_request_mode_switch(). Greybus is a local bus (USB/UART/serdev transport), not remotely reachable, so exploitation requires local access to the system.\nAC:L - The attacker directly controls the work-queueing side via the ioctl and can retry it in a tight loop indefinitely, while the free side (interface refcount drop via module removal / SVC teardown) can be induced repeatedly by hot-unplug or the 2-second mode-switch timeout path that calls gb_interface_deactivate(). Heap grooming of the ~1KB gb_interface allocation is standard, so the attacker creates and wins the race himself rather than depending on conditions outside his control.\nPR:L - fw_mgmt_ioctl() and fw_mgmt_ioctl_unlocked() contain no capable() or CAP_* check at all; the only gate is the permission on the /dev/gb-fw-mgmt-N node, which on greybus-based embedded/mobile deployments is routinely granted to a non-root firmware-management service or group. An unprivileged user holding a descriptor to that node can drive the entire path.\nUI:N - No victim action is needed \u2014 the attacker issues the ioctl himself, and the freeing side is driven by SVC module-removed events or the mode-switch timeout that the attacker can provoke. No file must be opened and no filesystem mounted by another user.\nS:U - The use-after-free corrupts kernel heap memory and is exploited within the same kernel security authority; there is no hypervisor, IOMMU, or sandbox boundary crossed. This is standard local kernel privilege escalation.\nC:H - The freed gb_interface can be reclaimed and sprayed by the attacker, after which gb_interface_mode_switch_work() reads intf-\u003econtrol, intf-\u003eenabled and walks intf-\u003ebundles, giving a controlled-pointer dereference usable as an arbitrary kernel-memory read primitive. Full disclosure of kernel memory, including credentials and KASLR-defeating pointers, is achievable.\nI:H - mutex_lock(\u0026intf-\u003emutex) on the freed object writes into attacker-controlled reclaimed memory, and gb_bundle_destroy() iterating the stale intf-\u003ebundles list performs list-unlink writes through attacker-supplied pointers. These are classic UAF write primitives that can be escalated to control-flow hijack and full kernel compromise.\nA:H - Even without successful reclaim, the work item dereferences and takes a mutex on freed memory, producing a kernel oops or panic. Any use-after-free of this kind reliably crashes the system, and the ioctl can be repeated to trigger it at will."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:33:44.931Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/74cd0a421896b2e07eafe7da4275302bfecef201"
        },
        {
          "url": "https://git.kernel.org/stable/c/2b6bb0b4abfd79b8698ee161bb73c0936a2aaf83"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb071f5c75d4b1c177824de74ee75f9dd34123b9"
        },
        {
          "url": "https://git.kernel.org/stable/c/9a733d69a4a59c2d08620e6589d823c24be773dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b8fba38bdfb848fac52e71270b2aa3538c996ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/03ea2b129344152157418929f06726989efc0445"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c9c5d7f26acc2c669c1dcf57d1bb43ee99220ce"
        }
      ],
      "title": "greybus: Fix use-after-free bug in gb_interface_release due to race condition.",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-39495",
    "datePublished": "2024-07-12T12:20:31.022Z",
    "dateReserved": "2024-06-25T14:23:23.751Z",
    "dateUpdated": "2026-08-05T11:33:44.931Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

FKIE_CVE-2024-39495

CVE-2024-39495 (GCVE-0-2024-39495)

Tags

Sightings

Nomenclature

Related by attack behaviour