ghsa-2vp4-6vg4-qh8r
Vulnerability from github
Published
2025-03-17 18:31
Modified
2025-03-17 18:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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:

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

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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49468"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:23Z",
    "severity": "MODERATE"
  },
  "details": "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    [\u003c0000000038b2f4fc\u003e] kmalloc_order_trace+0x1d/0x110 mm/slab_common.c:969\n    [\u003c00000000ebcb8da5\u003e] __kmalloc+0x373/0x420 include/linux/slab.h:510\n    [\u003c0000000084137f13\u003e] thermal_cooling_device_setup_sysfs+0x15d/0x2d0 include/linux/slab.h:586\n    [\u003c00000000352b8755\u003e] __thermal_cooling_device_register+0x332/0xa60 drivers/thermal/thermal_core.c:927\n    [\u003c00000000fb9f331b\u003e] devm_thermal_of_cooling_device_register+0x6b/0xf0 drivers/thermal/thermal_core.c:1041\n    [\u003c000000009b8012d2\u003e] max6650_probe.cold+0x557/0x6aa drivers/hwmon/max6650.c:211\n    [\u003c00000000da0b7e04\u003e] 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().",
  "id": "GHSA-2vp4-6vg4-qh8r",
  "modified": "2025-03-17T18:31:50Z",
  "published": "2025-03-17T18:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49468"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18530bedd221160823f63ccc20dd55c7a03edbcf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21ccc58b671aea924f2481cf5c1cf0ebbfd3552d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3802171f0b5b8b831f4ade5c827547cb323a5bb2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98a160e898c0f4a979af9de3ab48b4b1d42d1dbb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9abdf0c0184230f0cb5c6685aabf33dda89aa9fb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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