ghsa-747f-wh5x-mp2p
Vulnerability from github
Published
2024-05-21 15:31
Modified
2024-12-30 21:30
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:

net: usb: fix possible use-after-free in smsc75xx_bind

The commit 46a8b29c6306 ("net: usb: fix memory leak in smsc75xx_bind") fails to clean up the work scheduled in smsc75xx_reset-> smsc75xx_set_multicast, which leads to use-after-free if the work is scheduled to start after the deallocation. In addition, this patch also removes a dangling pointer - dev->data[0].

This patch calls cancel_work_sync to cancel the scheduled work and set the dangling pointer to NULL.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47239"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:13Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: fix possible use-after-free in smsc75xx_bind\n\nThe commit 46a8b29c6306 (\"net: usb: fix memory leak in smsc75xx_bind\")\nfails to clean up the work scheduled in smsc75xx_reset-\u003e\nsmsc75xx_set_multicast, which leads to use-after-free if the work is\nscheduled to start after the deallocation. In addition, this patch\nalso removes a dangling pointer - dev-\u003edata[0].\n\nThis patch calls cancel_work_sync to cancel the scheduled work and set\nthe dangling pointer to NULL.",
  "id": "GHSA-747f-wh5x-mp2p",
  "modified": "2024-12-30T21:30:46Z",
  "published": "2024-05-21T15:31:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47239"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/14616c372a7be01a2fb8c56c9d8debd232b9e43d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4252bf6c2b245f47011098113d405ffad6ad5d5b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b"
    }
  ],
  "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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