ghsa-f656-g9wf-2686
Vulnerability from github
Published
2025-03-27 18:31
Modified
2025-10-30 18:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

ipv4: prevent potential spectre v1 gadget in fib_metrics_match()

if (!type) continue; if (type > RTAX_MAX) return false; ... fi_val = fi->fib_metrics->metrics[type - 1];

@type being used as an array index, we need to prevent cpu speculation or risk leaking kernel memory content.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52996"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-27T17:15:48Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: prevent potential spectre v1 gadget in fib_metrics_match()\n\nif (!type)\n        continue;\n    if (type \u003e RTAX_MAX)\n        return false;\n    ...\n    fi_val = fi-\u003efib_metrics-\u003emetrics[type - 1];\n\n@type being used as an array index, we need to prevent\ncpu speculation or risk leaking kernel memory content.",
  "id": "GHSA-f656-g9wf-2686",
  "modified": "2025-10-30T18:31:04Z",
  "published": "2025-03-27T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52996"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5e9398a26a92fc402d82ce1f97cc67d832527da0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f9828fb1f688210e681268490576f0ca65c322a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f0eb24f1a7a60ce635f0d757a46f1a37a4d467d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca3cf947760de050d558293002ad3e7f4b8745d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9753ebd61be2d957b5504cbd3fd719674f05b7a"
    }
  ],
  "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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