ghsa-f558-fw4f-vm2c
Vulnerability from github
Published
2024-06-20 12:31
Modified
2024-08-19 18:32
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

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

selinux: fix double free of cond_list on error paths

On error path from cond_read_list() and duplicate_policydb_cond_list() the cond_list_destroy() gets called a second time in caller functions, resulting in NULL pointer deref. Fix this by resetting the cond_list_len to 0 in cond_list_destroy(), making subsequent calls a noop.

Also consistently reset the cond_list pointer to NULL after freeing.

[PM: fix line lengths in the description]

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48740"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-20T12:15:12Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: fix double free of cond_list on error paths\n\nOn error path from cond_read_list() and duplicate_policydb_cond_list()\nthe cond_list_destroy() gets called a second time in caller functions,\nresulting in NULL pointer deref.  Fix this by resetting the\ncond_list_len to 0 in cond_list_destroy(), making subsequent calls a\nnoop.\n\nAlso consistently reset the cond_list pointer to NULL after freeing.\n\n[PM: fix line lengths in the description]",
  "id": "GHSA-f558-fw4f-vm2c",
  "modified": "2024-08-19T18:32:03Z",
  "published": "2024-06-20T12:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48740"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/186edf7e368c40d06cf727a1ad14698ea67b74ad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70caa32e6d81f45f0702070c0e4dfe945e92fbd7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f446089a268c8fc6908488e991d28a9b936293db"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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