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CVE-2022-49468

Estado: ModificadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

thermal/core: Fix memory leak in __thermal_cooling_device_register()

I got memory leak as follows when doing fault injection test:

If device_register() fails, thermal_cooling_device_destroy_sysfs() need be called to free the memory allocated in thermal_cooling_device_setup_sysfs().

Detalles técnicos trazas, registros y código del informe original
unreferenced object 0xffff888010080000 (size 264312):
  comm "182", pid 102533, jiffies 4296434960 (age 10.100s)
  hex dump (first 32 bytes):
    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........
    ff ff ff ff ff ff ff ff 40 7f 1f b9 ff ff ff ff  ........@.......
  backtrace:
    [<0000000038b2f4fc>] kmalloc_order_trace+0x1d/0x110 mm/slab_common.c:969
    [<00000000ebcb8da5>] __kmalloc+0x373/0x420 include/linux/slab.h:510
    [<0000000084137f13>] thermal_cooling_device_setup_sysfs+0x15d/0x2d0 include/linux/slab.h:586
    [<00000000352b8755>] __thermal_cooling_device_register+0x332/0xa60 drivers/thermal/thermal_core.c:927
    [<00000000fb9f331b>] devm_thermal_of_cooling_device_register+0x6b/0xf0 drivers/thermal/thermal_core.c:1041
    [<000000009b8012d2>] max6650_probe.cold+0x557/0x6aa drivers/hwmon/max6650.c:211
    [<00000000da0b7e04>] i2c_device_probe+0x472/0xac0 drivers/i2c/i2c-core-base.c:561

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-49468",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2025-10-01T19:39:52.745332Z"
        }
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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  "published": "2025-02-26T07:01:23.063",
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  "vulnStatus": "Modified",
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal/core: Fix memory leak in __thermal_cooling_device_register()\n\nI got memory leak as follows when doing fault injection test:\n\nunreferenced object 0xffff888010080000 (size 264312):\n  comm \"182\", pid 102533, jiffies 4296434960 (age 10.100s)\n  hex dump (first 32 bytes):\n    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........\n    ff ff ff ff ff ff ff ff 40 7f 1f b9 ff ff ff ff  ........@.......\n  backtrace:\n    [<0000000038b2f4fc>] kmalloc_order_trace+0x1d/0x110 mm/slab_common.c:969\n    [<00000000ebcb8da5>] __kmalloc+0x373/0x420 include/linux/slab.h:510\n    [<0000000084137f13>] thermal_cooling_device_setup_sysfs+0x15d/0x2d0 include/linux/slab.h:586\n    [<00000000352b8755>] __thermal_cooling_device_register+0x332/0xa60 drivers/thermal/thermal_core.c:927\n    [<00000000fb9f331b>] devm_thermal_of_cooling_device_register+0x6b/0xf0 drivers/thermal/thermal_core.c:1041\n    [<000000009b8012d2>] max6650_probe.cold+0x557/0x6aa drivers/hwmon/max6650.c:211\n    [<00000000da0b7e04>] i2c_device_probe+0x472/0xac0 drivers/i2c/i2c-core-base.c:561\n\nIf device_register() fails, thermal_cooling_device_destroy_sysfs() need be called\nto free the memory allocated in thermal_cooling_device_setup_sysfs()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: thermal/core: Fix memory leak in __thermal_cooling_device_register() Obtuve una pérdida de memoria de la siguiente manera al realizar la prueba de inyección de fallas: objeto sin referencia 0xffff888010080000 (size 264312): comm \"182\", pid 102533, jiffies 4296434960 (age 10.100s) hex dump (first 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff 40 7f 1f b9 ff ff ff ff ........@....... backtrace: [&lt;0000000038b2f4fc&gt;] kmalloc_order_trace+0x1d/0x110 mm/slab_common.c:969 [&lt;00000000ebcb8da5&gt;] __kmalloc+0x373/0x420 include/linux/slab.h:510 [&lt;0000000084137f13&gt;] thermal_cooling_device_setup_sysfs+0x15d/0x2d0 include/linux/slab.h:586 [&lt;00000000352b8755&gt;] __thermal_cooling_device_register+0x332/0xa60 drivers/thermal/thermal_core.c:927 [&lt;00000000fb9f331b&gt;] devm_thermal_of_cooling_device_register+0x6b/0xf0 drivers/thermal/thermal_core.c:1041 [&lt;000000009b8012d2&gt;] max6650_probe.cold+0x557/0x6aa drivers/hwmon/max6650.c:211 [&lt;00000000da0b7e04&gt;] i2c_device_probe+0x472/0xac0 drivers/i2c/i2c-core-base.c:561 If device_register() fails, thermal_cooling_device_destroy_sysfs() need be called to free the memory allocated in thermal_cooling_device_setup_sysfs(). "
    }
  ],
  "lastModified": "2026-06-17T05:18:08.397",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
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