fkie_cve-2024-47733
Vulnerability from fkie_nvd
Published
2024-10-21 13:15
Modified
2024-10-23 17:11
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: netfs: Delete subtree of 'fs/netfs' when netfs module exits In netfs_init() or fscache_proc_init(), we create dentry under 'fs/netfs', but in netfs_exit(), we only delete the proc entry of 'fs/netfs' without deleting its subtree. This triggers the following WARNING: ================================================================== remove_proc_entry: removing non-empty directory 'fs/netfs', leaking at least 'requests' WARNING: CPU: 4 PID: 566 at fs/proc/generic.c:717 remove_proc_entry+0x160/0x1c0 Modules linked in: netfs(-) CPU: 4 UID: 0 PID: 566 Comm: rmmod Not tainted 6.11.0-rc3 #860 RIP: 0010:remove_proc_entry+0x160/0x1c0 Call Trace: <TASK> netfs_exit+0x12/0x620 [netfs] __do_sys_delete_module.isra.0+0x14c/0x2e0 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e ================================================================== Therefore use remove_proc_subtree() instead of remove_proc_entry() to fix the above problem.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c58a9575e02c2b90a3180007d57105ceaa7c246Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/603f95cefbee06a31b03137b777f03e3c2163d72Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7a9eaf97d56625e55b31a7beb558e1ee185ca461Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C22AF5AC-7F54-4360-A603-8A032CC9087A",
              "versionEndExcluding": "6.10.13",
              "versionStartIncluding": "6.8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AB755D26-97F4-43B6-8604-CD076811E181",
              "versionEndExcluding": "6.11.2",
              "versionStartIncluding": "6.11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Delete subtree of \u0027fs/netfs\u0027 when netfs module exits\n\nIn netfs_init() or fscache_proc_init(), we create dentry under \u0027fs/netfs\u0027,\nbut in netfs_exit(), we only delete the proc entry of \u0027fs/netfs\u0027 without\ndeleting its subtree. This triggers the following WARNING:\n\n==================================================================\nremove_proc_entry: removing non-empty directory \u0027fs/netfs\u0027, leaking at least \u0027requests\u0027\nWARNING: CPU: 4 PID: 566 at fs/proc/generic.c:717 remove_proc_entry+0x160/0x1c0\nModules linked in: netfs(-)\nCPU: 4 UID: 0 PID: 566 Comm: rmmod Not tainted 6.11.0-rc3 #860\nRIP: 0010:remove_proc_entry+0x160/0x1c0\nCall Trace:\n \u003cTASK\u003e\n netfs_exit+0x12/0x620 [netfs]\n __do_sys_delete_module.isra.0+0x14c/0x2e0\n do_syscall_64+0x4b/0x110\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n==================================================================\n\nTherefore use remove_proc_subtree() instead of remove_proc_entry() to\nfix the above problem."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfs: Eliminar sub\u00e1rbol de \u0027fs/netfs\u0027 cuando el m\u00f3dulo netfs sale En netfs_init() o fscache_proc_init(), creamos una dentry bajo \u0027fs/netfs\u0027, pero en netfs_exit(), solo eliminamos la entrada de procedimiento de \u0027fs/netfs\u0027 sin eliminar su sub\u00e1rbol. Esto activa la siguiente ADVERTENCIA: == ... netfs_exit+0x12/0x620 [netfs] __do_sys_delete_module.isra.0+0x14c/0x2e0 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e ======================================================================= Por lo tanto, utilice remove_proc_subtree() en lugar de remove_proc_entry() para solucionar el problema anterior."
    }
  ],
  "id": "CVE-2024-47733",
  "lastModified": "2024-10-23T17:11:29.537",
  "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": "2024-10-21T13:15:03.450",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3c58a9575e02c2b90a3180007d57105ceaa7c246"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/603f95cefbee06a31b03137b777f03e3c2163d72"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/7a9eaf97d56625e55b31a7beb558e1ee185ca461"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-772"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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