ghsa-28cg-r647-j4cw
Vulnerability from github
Published
2024-02-28 09:30
Modified
2024-12-06 15:31
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:

ethernet:enic: Fix a use after free bug in enic_hard_start_xmit

In enic_hard_start_xmit, it calls enic_queue_wq_skb(). Inside enic_queue_wq_skb, if some error happens, the skb will be freed by dev_kfree_skb(skb). But the freed skb is still used in skb_tx_timestamp(skb).

My patch makes enic_queue_wq_skb() return error and goto spin_unlock() incase of error. The solution is provided by Govind. See https://lkml.org/lkml/2021/4/30/961.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2021-46998"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-28T09:15:38Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nethernet:enic: Fix a use after free bug in enic_hard_start_xmit\n\nIn enic_hard_start_xmit, it calls enic_queue_wq_skb(). Inside\nenic_queue_wq_skb, if some error happens, the skb will be freed\nby dev_kfree_skb(skb). But the freed skb is still used in\nskb_tx_timestamp(skb).\n\nMy patch makes enic_queue_wq_skb() return error and goto spin_unlock()\nincase of error. The solution is provided by Govind.\nSee https://lkml.org/lkml/2021/4/30/961.",
  "id": "GHSA-28cg-r647-j4cw",
  "modified": "2024-12-06T15:31:19Z",
  "published": "2024-02-28T09:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46998"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25a87b1f566b5eb2af2857a928f0e2310d900976"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/643001b47adc844ae33510c4bb93c236667008a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6892396ebf04ea2c021d80e10f4075e014cd7cc3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7afdd6aba95c8a526038e7abe283eeac3e4320f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d90529392aaf498dafa95d212295d64b2cea4e24"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7f6f07774091a6ddd98500b85386c3c6afb30d3"
    }
  ],
  "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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