FKIE_CVE-2021-47173

Vulnerability from fkie_nvd - Published: 2024-03-25 10:15 - Updated: 2026-06-17 04:16
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: misc/uss720: fix memory leak in uss720_probe uss720_probe forgets to decrease the refcount of usbdev in uss720_probe. Fix this by decreasing the refcount of usbdev by usb_put_dev. BUG: memory leak unreferenced object 0xffff888101113800 (size 2048): comm "kworker/0:1", pid 7, jiffies 4294956777 (age 28.870s) hex dump (first 32 bytes): ff ff ff ff 31 00 00 00 00 00 00 00 00 00 00 00 ....1........... 00 00 00 00 00 00 00 00 00 00 00 00 03 00 00 00 ................ backtrace: [<ffffffff82b8e822>] kmalloc include/linux/slab.h:554 [inline] [<ffffffff82b8e822>] kzalloc include/linux/slab.h:684 [inline] [<ffffffff82b8e822>] usb_alloc_dev+0x32/0x450 drivers/usb/core/usb.c:582 [<ffffffff82b98441>] hub_port_connect drivers/usb/core/hub.c:5129 [inline] [<ffffffff82b98441>] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline] [<ffffffff82b98441>] port_event drivers/usb/core/hub.c:5509 [inline] [<ffffffff82b98441>] hub_event+0x1171/0x20c0 drivers/usb/core/hub.c:5591 [<ffffffff81259229>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2275 [<ffffffff81259b19>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2421 [<ffffffff81261228>] kthread+0x178/0x1b0 kernel/kthread.c:292 [<ffffffff8100227f>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/36b5ff1db1a4ef4fdbc2bae364344279f033ad88Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/386918878ce4cd676e4607233866e03c9399a46aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5394ae9d8c7961dd93807fdf1b12a1dde96b0a55Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5f46b2410db2c8f26b8bb91b40deebf4ec184391Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7889c70e6173ef358f3cd7578db127a489035a42Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a3c3face38cb49932c62adcc1289914f1c742096Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bcb30cc8f8befcbdbcf7a016e4dfd4747c54a364Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dcb4b8ad6a448532d8b681b5d1a7036210b622dePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/36b5ff1db1a4ef4fdbc2bae364344279f033ad88Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/386918878ce4cd676e4607233866e03c9399a46aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5394ae9d8c7961dd93807fdf1b12a1dde96b0a55Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5f46b2410db2c8f26b8bb91b40deebf4ec184391Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/7889c70e6173ef358f3cd7578db127a489035a42Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a3c3face38cb49932c62adcc1289914f1c742096Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bcb30cc8f8befcbdbcf7a016e4dfd4747c54a364Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/dcb4b8ad6a448532d8b681b5d1a7036210b622dePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/misc/uss720.c"
          ],
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          "vendor": "Linux",
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          "product": "Linux",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.14"
            },
            {
              "lessThan": "2.6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "version": "4.4.271",
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              "version": "4.9.271",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "4.14.235",
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              "version": "4.19.193",
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              "status": "unaffected",
              "version": "5.10.42",
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              "status": "unaffected",
              "version": "5.12.9",
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc/uss720: fix memory leak in uss720_probe\n\nuss720_probe forgets to decrease the refcount of usbdev in uss720_probe.\nFix this by decreasing the refcount of usbdev by usb_put_dev.\n\nBUG: memory leak\nunreferenced object 0xffff888101113800 (size 2048):\n  comm \"kworker/0:1\", pid 7, jiffies 4294956777 (age 28.870s)\n  hex dump (first 32 bytes):\n    ff ff ff ff 31 00 00 00 00 00 00 00 00 00 00 00  ....1...........\n    00 00 00 00 00 00 00 00 00 00 00 00 03 00 00 00  ................\n  backtrace:\n    [\u003cffffffff82b8e822\u003e] kmalloc include/linux/slab.h:554 [inline]\n    [\u003cffffffff82b8e822\u003e] kzalloc include/linux/slab.h:684 [inline]\n    [\u003cffffffff82b8e822\u003e] usb_alloc_dev+0x32/0x450 drivers/usb/core/usb.c:582\n    [\u003cffffffff82b98441\u003e] hub_port_connect drivers/usb/core/hub.c:5129 [inline]\n    [\u003cffffffff82b98441\u003e] hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]\n    [\u003cffffffff82b98441\u003e] port_event drivers/usb/core/hub.c:5509 [inline]\n    [\u003cffffffff82b98441\u003e] hub_event+0x1171/0x20c0 drivers/usb/core/hub.c:5591\n    [\u003cffffffff81259229\u003e] process_one_work+0x2c9/0x600 kernel/workqueue.c:2275\n    [\u003cffffffff81259b19\u003e] worker_thread+0x59/0x5d0 kernel/workqueue.c:2421\n    [\u003cffffffff81261228\u003e] kthread+0x178/0x1b0 kernel/kthread.c:292\n    [\u003cffffffff8100227f\u003e] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: misc/uss720: corrige la p\u00e9rdida de memoria en uss720_probe uss720_probe olvida disminuir el recuento de usbdev en uss720_probe. Solucione este problema disminuyendo el recuento de usbdev por usb_put_dev. ERROR: p\u00e9rdida de memoria, objeto sin referencia 0xffff888101113800 (tama\u00f1o 2048): comunicaci\u00f3n \"kworker/0:1\", pid 7, jiffies 4294956777 (edad 28,870 s) volcado hexadecimal (primeros 32 bytes): ff ff ff ff 31 00 00 00 00 00 00 00 00 00 00 00 ....1.......... 00 00 00 00 00 00 00 00 00 00 00 00 03 00 00 00 ................. ... seguimiento: [] kmalloc include/linux/slab.h:554 [en l\u00ednea] [] kzalloc include/linux/slab.h:684 [en l\u00ednea] [] usb_alloc_dev+0x32/ 0x450 controladores/usb/core/usb.c:582 [] hub_port_connect drivers/usb/core/hub.c:5129 [en l\u00ednea] [] hub_port_connect_change drivers/usb/core/hub.c:5363 [ en l\u00ednea] [] port_event drivers/usb/core/hub.c:5509 [en l\u00ednea] [] hub_event+0x1171/0x20c0 drivers/usb/core/hub.c:5591 [] Process_one_work+ 0x2c9/0x600 kernel/workqueue.c:2275 [] trabajador_thread+0x59/0x5d0 kernel/workqueue.c:2421 [] kthread+0x178/0x1b0 kernel/kthread.c:292 [ ] ret_from_fork +0x1f/0x30 arco/x86/entrada/entrada_64.S:294"
    }
  ],
  "id": "CVE-2021-47173",
  "lastModified": "2026-06-17T04:16:49.870",
  "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-47173",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-06-21T16:08:15.214025Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-03-25T10:15:09.010",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    },
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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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