fkie_cve-2021-46924
Vulnerability from fkie_nvd
Published
2024-02-27 10:15
Modified
2024-11-21 06:34
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: NFC: st21nfca: Fix memory leak in device probe and remove 'phy->pending_skb' is alloced when device probe, but forgot to free in the error handling path and remove path, this cause memory leak as follows: unreferenced object 0xffff88800bc06800 (size 512): comm "8", pid 11775, jiffies 4295159829 (age 9.032s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000d66c09ce>] __kmalloc_node_track_caller+0x1ed/0x450 [<00000000c93382b3>] kmalloc_reserve+0x37/0xd0 [<000000005fea522c>] __alloc_skb+0x124/0x380 [<0000000019f29f9a>] st21nfca_hci_i2c_probe+0x170/0x8f2 Fix it by freeing 'pending_skb' in error and remove.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1b9dadba502234eea7244879b8d5d126bfaf9f0cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1cd4063dbc91cf7965d73a6a3855e2028cd4613bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/238920381b8925d070d32d73cd9ce52ab29896fePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/38c3e320e7ff46f2dc67bc5045333e63d9f8918dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a1e0080a35a16ce3808f7040fe0c3a8fdb052349Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e553265ea56482da5700f56319fda9ff53e7dcb4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1b9dadba502234eea7244879b8d5d126bfaf9f0cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1cd4063dbc91cf7965d73a6a3855e2028cd4613bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/238920381b8925d070d32d73cd9ce52ab29896fePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/38c3e320e7ff46f2dc67bc5045333e63d9f8918dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a1e0080a35a16ce3808f7040fe0c3a8fdb052349Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e553265ea56482da5700f56319fda9ff53e7dcb4Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8A00E6D4-E196-4382-BAC7-C4BAC5A9CFAA",
              "versionEndExcluding": "4.14.261",
              "versionStartIncluding": "3.16.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B34A1353-506A-4AB9-87EC-CD50F09DFB8A",
              "versionEndExcluding": "4.19.224",
              "versionStartIncluding": "4.15.0",
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              "matchCriteriaId": "C87FB3FD-3E74-4588-A1A4-B9BA8AE0C06B",
              "versionEndExcluding": "5.10.90",
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            {
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              "versionEndExcluding": "5.15.13",
              "versionStartIncluding": "5.11.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: st21nfca: Fix memory leak in device probe and remove\n\n\u0027phy-\u003epending_skb\u0027 is alloced when device probe, but forgot to free\nin the error handling path and remove path, this cause memory leak\nas follows:\n\nunreferenced object 0xffff88800bc06800 (size 512):\n  comm \"8\", pid 11775, jiffies 4295159829 (age 9.032s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003c00000000d66c09ce\u003e] __kmalloc_node_track_caller+0x1ed/0x450\n    [\u003c00000000c93382b3\u003e] kmalloc_reserve+0x37/0xd0\n    [\u003c000000005fea522c\u003e] __alloc_skb+0x124/0x380\n    [\u003c0000000019f29f9a\u003e] st21nfca_hci_i2c_probe+0x170/0x8f2\n\nFix it by freeing \u0027pending_skb\u0027 in error and remove."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: NFC: st21nfca: corrige la p\u00e9rdida de memoria en la sonda del dispositivo y elimina \u0027phy-\u0026gt;pending_skb\u0027 cuando se asigna la sonda del dispositivo, pero olvid\u00f3 liberarla en la ruta de manejo de errores y eliminar la ruta, esto causa p\u00e9rdida de memoria de la siguiente manera: objeto sin referencia 0xffff88800bc06800 (tama\u00f1o 512): comunicaci\u00f3n \"8\", pid 11775, santiago 4295159829 (edad 9.032 s) volcado hexadecimal (primeros 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................. backtrace: [\u0026lt;00000000d66c09ce\u0026gt;] __kmalloc_node_track_caller+0x1ed/0x450 [\u0026lt;00000000c93382b3\u0026gt;] kmalloc_reserve+0x37/0xd0 [\u0026lt;000000005fea522c\u0026gt;] __alloc_skb+0x124/0x380 [ \u0026lt;0000000019f29f9a\u0026gt;] st21nfca_hci_i2c_probe+0x170/0x8f2 Solucionarlo liberando \u0027pending_skb\u0027 por error y elim\u00ednelo."
    }
  ],
  "id": "CVE-2021-46924",
  "lastModified": "2024-11-21T06:34:56.670",
  "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": "2024-02-27T10:15:07.150",
  "references": [
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    },
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
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  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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