fkie_cve-2022-49793
Vulnerability from fkie_nvd
Published
2025-05-01 15:16
Modified
2025-05-02 13:53
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: iio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init() dev_set_name() allocates memory for name, it need be freed when device_add() fails, call put_device() to give up the reference that hold in device_initialize(), so that it can be freed in kobject_cleanup() when the refcount hit to 0. Fault injection test can trigger this: unreferenced object 0xffff8e8340a7b4c0 (size 32): comm "modprobe", pid 243, jiffies 4294678145 (age 48.845s) hex dump (first 32 bytes): 69 69 6f 5f 73 79 73 66 73 5f 74 72 69 67 67 65 iio_sysfs_trigge 72 00 a7 40 83 8e ff ff 00 86 13 c4 f6 ee ff ff r..@............ backtrace: [<0000000074999de8>] __kmem_cache_alloc_node+0x1e9/0x360 [<00000000497fd30b>] __kmalloc_node_track_caller+0x44/0x1a0 [<000000003636c520>] kstrdup+0x2d/0x60 [<0000000032f84da2>] kobject_set_name_vargs+0x1e/0x90 [<0000000092efe493>] dev_set_name+0x4e/0x70
Impacted products
Vendor Product Version



{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init()\n\ndev_set_name() allocates memory for name, it need be freed\nwhen device_add() fails, call put_device() to give up the\nreference that hold in device_initialize(), so that it can\nbe freed in kobject_cleanup() when the refcount hit to 0.\n\nFault injection test can trigger this:\n\nunreferenced object 0xffff8e8340a7b4c0 (size 32):\n  comm \"modprobe\", pid 243, jiffies 4294678145 (age 48.845s)\n  hex dump (first 32 bytes):\n    69 69 6f 5f 73 79 73 66 73 5f 74 72 69 67 67 65  iio_sysfs_trigge\n    72 00 a7 40 83 8e ff ff 00 86 13 c4 f6 ee ff ff  r..@............\n  backtrace:\n    [\u003c0000000074999de8\u003e] __kmem_cache_alloc_node+0x1e9/0x360\n    [\u003c00000000497fd30b\u003e] __kmalloc_node_track_caller+0x44/0x1a0\n    [\u003c000000003636c520\u003e] kstrdup+0x2d/0x60\n    [\u003c0000000032f84da2\u003e] kobject_set_name_vargs+0x1e/0x90\n    [\u003c0000000092efe493\u003e] dev_set_name+0x4e/0x70"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iio: trigger: sysfs: se corrige una posible fuga de memoria en iio_sysfs_trig_init(). dev_set_name() asigna memoria para name. Esta debe liberarse cuando device_add() falla. Se llama a put_device() para liberar la referencia contenida en device_initialize(), de modo que pueda liberarse en kobject_cleanup() cuando refcount llegue a 0. La prueba de inyecci\u00f3n de fallos puede desencadenar esto: objeto sin referencia 0xffff8e8340a7b4c0 (tama\u00f1o 32): comm \"modprobe\", pid 243, jiffies 4294678145 (edad 48.845s) volcado hexadecimal (primeros 32 bytes): 69 69 6f 5f 73 79 73 66 73 5f 74 72 69 67 67 65 iio_sysfs_trigge 72 00 a7 40 83 8e ff ff 00 86 13 c4 f6 ee ff ff r..@............ backtrace: [\u0026lt;0000000074999de8\u0026gt;] __kmem_cache_alloc_node+0x1e9/0x360 [\u0026lt;00000000497fd30b\u0026gt;] __kmalloc_node_track_caller+0x44/0x1a0 [\u0026lt;000000003636c520\u0026gt;] kstrdup+0x2d/0x60 [\u0026lt;0000000032f84da2\u0026gt;] kobject_set_name_vargs+0x1e/0x90 [\u0026lt;0000000092efe493\u0026gt;] dev_set_name+0x4e/0x70 "
    }
  ],
  "id": "CVE-2022-49793",
  "lastModified": "2025-05-02T13:53:20.943",
  "metrics": {},
  "published": "2025-05-01T15:16:02.563",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0dd52e141afde089304de470148d311b05c14564"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2c4e65285bdea23fd36d2ff376006ac64db6f42e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5a39382aa5411d64b25a71516c2c7480aab13bb7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/656f670613662b6cc77aad14112db2803ad18fa8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8dddf2699da296c84205582aaead6b43dd7e8c4b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b47bb521961f027b4dcf8683337a7a1ba9e5ea1f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/efa17e90e1711bdb084e3954fa44afb6647331c0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f68c96821b61d2c71a35dbb8bf90c347fad624d9"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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