ghsa-3w59-vx6f-4274
Vulnerability from github
Published
2024-05-21 15:31
Modified
2025-04-29 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: cdc_eem: fix tx fixup skb leak

when usbnet transmit a skb, eem fixup it in eem_tx_fixup(), if skb_copy_expand() failed, it return NULL, usbnet_start_xmit() will have no chance to free original skb.

fix it by free orginal skb in eem_tx_fixup() first, then check skb clone status, if failed, return NULL to usbnet.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47236"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:12Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: cdc_eem: fix tx fixup skb leak\n\nwhen usbnet transmit a skb, eem fixup it in eem_tx_fixup(),\nif skb_copy_expand() failed, it return NULL,\nusbnet_start_xmit() will have no chance to free original skb.\n\nfix it by free orginal skb in eem_tx_fixup() first,\nthen check skb clone status, if failed, return NULL to usbnet.",
  "id": "GHSA-3w59-vx6f-4274",
  "modified": "2025-04-29T21:31:35Z",
  "published": "2024-05-21T15:31:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47236"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05b2b9f7d24b5663d9b47427fe1555bdafd3ea02"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/14184ec5c958b589ba934da7363a2877879204df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1bcacd6088d61c0ac6a990d87975600a81f3247e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/81de2ed06df8b5451e050fe6a318af3263dbff3f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4f7a9fc9d094c0c4a66f2ad7c37b1dbe9e78f88"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3b26fdf1b32f91c7a3bc743384b4a298ab53ad7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f12554b0ff639e74612cc01b3b4a049e098d2d65"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4e6a7f19c82f39b1803e91c54718f0d7143767d"
    }
  ],
  "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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