ghsa-4q4j-hm78-5vmp
Vulnerability from github
Published
2024-05-21 15:31
Modified
2025-01-13 21:30
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:

iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation

The reference counting issue happens in several exception handling paths of arm_smmu_iova_to_phys_hard(). When those error scenarios occur, the function forgets to decrease the refcount of "smmu" increased by arm_smmu_rpm_get(), causing a refcount leak.

Fix this issue by jumping to "out" label when those error scenarios occur.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47325"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:19Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation\n\nThe reference counting issue happens in several exception handling paths\nof arm_smmu_iova_to_phys_hard(). When those error scenarios occur, the\nfunction forgets to decrease the refcount of \"smmu\" increased by\narm_smmu_rpm_get(), causing a refcount leak.\n\nFix this issue by jumping to \"out\" label when those error scenarios\noccur.",
  "id": "GHSA-4q4j-hm78-5vmp",
  "modified": "2025-01-13T21:30:47Z",
  "published": "2024-05-21T15:31:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47325"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0"
    }
  ],
  "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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