ghsa-g3pp-67rc-cjg2
Vulnerability from github
Published
2025-04-17 18:31
Modified
2025-04-17 21:31
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:

can: peak_usb: fix use after free bugs

After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the peak_usb_netif_rx_ni().

Reordering the lines solves the issue.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47670"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-17T18:15:43Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: peak_usb: fix use after free bugs\n\nAfter calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe.\nEspecially, the can_frame cf which aliases skb memory is accessed\nafter the peak_usb_netif_rx_ni().\n\nReordering the lines solves the issue.",
  "id": "GHSA-g3pp-67rc-cjg2",
  "modified": "2025-04-17T21:31:04Z",
  "published": "2025-04-17T18:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47670"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50aca891d7a554db0901b245167cd653d73aaa71"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5408824636fa0dfedb9ecb0d94abd573131bfbbe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ddd1416f44130377798c1430b76503513b7497c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec939c13c3fff2114479769c8380b7f1a54feca9"
    }
  ],
  "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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