ghsa-6q7v-49c4-hj5m
Vulnerability from github
Published
2025-06-18 12:30
Modified
2025-11-17 21:31
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:

apparmor: fix reference count leak in aa_pivotroot()

The aa_pivotroot() function has a reference counting bug in a specific path. When aa_replace_current_label() returns on success, the function forgets to decrement the reference count of “target”, which is increased earlier by build_pivotroot(), causing a reference leak.

Fix it by decreasing the refcount of “target” in that path.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50077"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:36Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fix reference count leak in aa_pivotroot()\n\nThe aa_pivotroot() function has a reference counting bug in a specific\npath. When aa_replace_current_label() returns on success, the function\nforgets to decrement the reference count of \u201ctarget\u201d, which is\nincreased earlier by build_pivotroot(), causing a reference leak.\n\nFix it by decreasing the refcount of \u201ctarget\u201d in that path.",
  "id": "GHSA-6q7v-49c4-hj5m",
  "modified": "2025-11-17T21:31:18Z",
  "published": "2025-06-18T12:30:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50077"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/11c3627ec6b56c1525013f336f41b79a983b4d46"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ceeb3296e9dde1d5772348046affcefdea605e2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ca40ad7afae144169a43988ef1a3f16182faf0a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64103ea357734b82384c925cba4758fdb909be0c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d53194707d2a1851be027cd74266b96ceff799d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef6fb6f0d0d8440595b45a7e53c6162c737177f4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4d5c7796571624e3f380b447ada52834270a287"
    }
  ],
  "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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