ghsa-7r4r-7wg2-96vj
Vulnerability from github
Published
2025-03-27 18:31
Modified
2025-04-15 15:30
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:

net: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices

The probe() function is only used for the DP83822 PHY, leaving the private data pointer uninitialized for the smaller DP83825/26 models. While all uses of the private data structure are hidden in 82822 specific callbacks, configuring the interrupt is shared across all models. This causes a NULL pointer dereference on the smaller PHYs as it accesses the private data unchecked. Verifying the pointer avoids that.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52984"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-27T17:15:45Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices\n\nThe probe() function is only used for the DP83822 PHY, leaving the\nprivate data pointer uninitialized for the smaller DP83825/26 models.\nWhile all uses of the private data structure are hidden in 82822 specific\ncallbacks, configuring the interrupt is shared across all models.\nThis causes a NULL pointer dereference on the smaller PHYs as it accesses\nthe private data unchecked. Verifying the pointer avoids that.",
  "id": "GHSA-7r4r-7wg2-96vj",
  "modified": "2025-04-15T15:30:48Z",
  "published": "2025-03-27T18:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52984"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2cd1e9c013ec56421c58921b1ddf1d2d53bd47fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/362a2f5531dc0e5b0b5b3e3a541000dbffa75461"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/422ae7d9c7221e8d4c8526d0f54106307d69d2dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/78901b10522cdf6badf24acf65a892637596bccc"
    }
  ],
  "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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