ghsa-vr2w-w74g-r822
Vulnerability from github
Published
2025-02-27 03:34
Modified
2025-03-13 15:32
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:

vrf: use RCU protection in l3mdev_l3_out()

l3mdev_l3_out() can be called without RCU being held:

raw_sendmsg() ip_push_pending_frames() ip_send_skb() ip_local_out() __ip_local_out() l3mdev_ip_out()

Add rcu_read_lock() / rcu_read_unlock() pair to avoid a potential UAF.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-21791"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-27T03:15:19Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvrf: use RCU protection in l3mdev_l3_out()\n\nl3mdev_l3_out() can be called without RCU being held:\n\nraw_sendmsg()\n ip_push_pending_frames()\n  ip_send_skb()\n   ip_local_out()\n    __ip_local_out()\n     l3mdev_ip_out()\n\nAdd rcu_read_lock() / rcu_read_unlock() pair to avoid\na potential UAF.",
  "id": "GHSA-vr2w-w74g-r822",
  "modified": "2025-03-13T15:32:52Z",
  "published": "2025-02-27T03:34:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21791"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/022cac1c693add610ae76ede03adf4d9d5a2cf21"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/20a3489b396764cc9376e32a9172bee26a89dc3b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5bb4228c32261d06e4fbece37ec3828bcc005b6b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ccaa5797f5362a2aad6baa6ddaf4715ac2dd51e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6d0ce46a93135d96b7fa075a94a88fe0da8e8773"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b81425b517accefd46bee854d94954f5c57e019"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c40cb5c03e37552d6eff963187109e2c3f78ef6f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c7574740be8ce68a57d0aece24987b9be2114c3c"
    }
  ],
  "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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