ghsa-5c7w-v73j-6cr4
Vulnerability from github
Published
2024-03-25 12:30
Modified
2025-03-13 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:

net: dsa: fix a crash if ->get_sset_count() fails

If ds->ops->get_sset_count() fails then it "count" is a negative error code such as -EOPNOTSUPP. Because "i" is an unsigned int, the negative error code is type promoted to a very high value and the loop will corrupt memory until the system crashes.

Fix this by checking for error codes and changing the type of "i" to just int.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47159"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-835"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-25T10:15:08Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: fix a crash if -\u003eget_sset_count() fails\n\nIf ds-\u003eops-\u003eget_sset_count() fails then it \"count\" is a negative error\ncode such as -EOPNOTSUPP.  Because \"i\" is an unsigned int, the negative\nerror code is type promoted to a very high value and the loop will\ncorrupt memory until the system crashes.\n\nFix this by checking for error codes and changing the type of \"i\" to\njust int.",
  "id": "GHSA-5c7w-v73j-6cr4",
  "modified": "2025-03-13T21:31:01Z",
  "published": "2024-03-25T12:30:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47159"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8"
    }
  ],
  "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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