ghsa-mgq9-9453-8m9x
Vulnerability from github
Published
2025-03-14 00:30
Modified
2025-03-14 00:30
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:

drm/amd/amdgpu/amdgpu_cs: fix refcount leak of a dma_fence obj

This issue takes place in an error path in amdgpu_cs_fence_to_handle_ioctl(). When info->in.what falls into default case, the function simply returns -EINVAL, forgetting to decrement the reference count of a dma_fence obj, which is bumped earlier by amdgpu_cs_get_fence(). This may result in reference count leaks.

Fix it by decreasing the refcount of specific object before returning the error code.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49137"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:00:50Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/amdgpu/amdgpu_cs: fix refcount leak of a dma_fence obj\n\nThis issue takes place in an error path in\namdgpu_cs_fence_to_handle_ioctl(). When `info-\u003ein.what` falls into\ndefault case, the function simply returns -EINVAL, forgetting to\ndecrement the reference count of a dma_fence obj, which is bumped\nearlier by amdgpu_cs_get_fence(). This may result in reference count\nleaks.\n\nFix it by decreasing the refcount of specific object before returning\nthe error code.",
  "id": "GHSA-mgq9-9453-8m9x",
  "modified": "2025-03-14T00:30:50Z",
  "published": "2025-03-14T00:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49137"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3edd8646cb7c11b57c90e026bda6f21076223f5b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4009f104b02b223d1a11d74b36b1cc083bc37028"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72d77ddb2224ebc00648f4f78f8a9a259dccbdf7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/927beb05aaa429c883cc0ec6adc48964b187e291"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6d1f7d97c81ebaf2cda9c4c943ee2e484fffdcf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc2d5c0775c839e2b072884f4ee6a93ba410f107"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dfced44f122c500004a48ecc8db516bb6a295a1b"
    }
  ],
  "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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