FKIE_CVE-2024-36932

Vulnerability from fkie_nvd - Published: 2024-05-30 16:15 - Updated: 2024-11-21 09:22
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: thermal/debugfs: Prevent use-after-free from occurring after cdev removal Since thermal_debug_cdev_remove() does not run under cdev->lock, it can run in parallel with thermal_debug_cdev_state_update() and it may free the struct thermal_debugfs object used by the latter after it has been checked against NULL. If that happens, thermal_debug_cdev_state_update() will access memory that has been freed already causing the kernel to crash. Address this by using cdev->lock in thermal_debug_cdev_remove() around the cdev->debugfs value check (in case the same cdev is removed at the same time in two different threads) and its reset to NULL. Cc :6.8+ <stable@vger.kernel.org> # 6.8+
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11daPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11daPatch
Impacted products
Vendor Product Version
linux linux_kernel *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B0D3E543-9D44-48EC-AEFE-B1F1DE163D83",
              "versionEndExcluding": "6.8.10",
              "versionStartIncluding": "6.8",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal/debugfs: Prevent use-after-free from occurring after cdev removal\n\nSince thermal_debug_cdev_remove() does not run under cdev-\u003elock, it can\nrun in parallel with thermal_debug_cdev_state_update() and it may free\nthe struct thermal_debugfs object used by the latter after it has been\nchecked against NULL.\n\nIf that happens, thermal_debug_cdev_state_update() will access memory\nthat has been freed already causing the kernel to crash.\n\nAddress this by using cdev-\u003elock in thermal_debug_cdev_remove() around\nthe cdev-\u003edebugfs value check (in case the same cdev is removed at the\nsame time in two different threads) and its reset to NULL.\n\nCc :6.8+ \u003cstable@vger.kernel.org\u003e # 6.8+"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Thermal/debugfs: evita que se produzca use after free despu\u00e9s de la eliminaci\u00f3n de cdev. Dado que Thermal_debug_cdev_remove() no se ejecuta bajo cdev-\u0026gt;lock, puede ejecutarse en paralelo con Thermal_debug_cdev_state_update() y puede liberar el objeto struct Thermal_debugfs utilizado por este \u00faltimo despu\u00e9s de haberlo verificado con NULL. Si eso sucede, Thermal_debug_cdev_state_update() acceder\u00e1 a la memoria que ya ha sido liberada, lo que provocar\u00e1 que el kernel falle. Solucione esto usando cdev-\u0026gt;lock en Thermal_debug_cdev_remove() alrededor de la verificaci\u00f3n del valor de cdev-\u0026gt;debugfs (en caso de que el mismo cdev se elimine al mismo tiempo en dos subprocesos diferentes) y se restablezca a NULL. CC :6.8+  # 6.8+"
    }
  ],
  "id": "CVE-2024-36932",
  "lastModified": "2024-11-21T09:22:50.917",
  "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": "2024-05-30T16:15:16.383",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11da"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11da"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.