GHSA-X97H-4PWX-3C9H

Vulnerability from github – Published: 2025-04-01 18:30 – Updated: 2025-11-03 21:33
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

caif_virtio: fix wrong pointer check in cfv_probe()

del_vqs() frees virtqueues, therefore cfv->vq_tx pointer should be checked for NULL before calling it, not cfv->vdev. Also the current implementation is redundant because the pointer cfv->vdev is dereferenced before it is checked for NULL.

Fix this by checking cfv->vq_tx for NULL instead of cfv->vdev before calling del_vqs().

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2025-21904"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-01T16:15:20Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncaif_virtio: fix wrong pointer check in cfv_probe()\n\ndel_vqs() frees virtqueues, therefore cfv-\u003evq_tx pointer should be checked\nfor NULL before calling it, not cfv-\u003evdev. Also the current implementation\nis redundant because the pointer cfv-\u003evdev is dereferenced before it is\nchecked for NULL.\n\nFix this by checking cfv-\u003evq_tx for NULL instead of cfv-\u003evdev before\ncalling del_vqs().",
  "id": "GHSA-x97h-4pwx-3c9h",
  "modified": "2025-11-03T21:33:20Z",
  "published": "2025-04-01T18:30:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21904"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29e0cd296c87240278e2f7ea4cf3f496b60c03af"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56cddf71cce3b15b078e937fadab29962b6f6643"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/597c27e5f04cb50e56cc9aeda75d3e42b6b89c3e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7b5fe58959822e6cfa884327cabba6be3b01883d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8e4e08ca4cc634b337bb74bc9a70758fdeda0bcb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/90d302619ee7ce5ed0c69c29c290bdccfde66418"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/990fff6980d0c1693d60a812f58dbf93eab0473f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a466fd7e9fafd975949e5945e2f70c33a94b1a70"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
    }
  ],
  "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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