ghsa-2jv6-v65m-qjx7
Vulnerability from github
Published
2024-05-01 06:31
Modified
2024-05-01 06:31
Details

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

powercap: intel_rapl: Fix a NULL pointer dereference

A NULL pointer dereference is triggered when probing the MMIO RAPL driver on platforms with CPU ID not listed in intel_rapl_common CPU model list.

This is because the intel_rapl_common module still probes on such platforms even if 'defaults_msr' is not set after commit 1488ac990ac8 ("powercap: intel_rapl: Allow probing without CPUID match"). Thus the MMIO RAPL rp->priv->defaults is NULL when registering to RAPL framework.

Fix the problem by adding sanity check to ensure rp->priv->rapl_defaults is always valid.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-26975"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-01T06:15:14Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npowercap: intel_rapl: Fix a NULL pointer dereference\n\nA NULL pointer dereference is triggered when probing the MMIO RAPL\ndriver on platforms with CPU ID not listed in intel_rapl_common CPU\nmodel list.\n\nThis is because the intel_rapl_common module still probes on such\nplatforms even if \u0027defaults_msr\u0027 is not set after commit 1488ac990ac8\n(\"powercap: intel_rapl: Allow probing without CPUID match\"). Thus the\nMMIO RAPL rp-\u003epriv-\u003edefaults is NULL when registering to RAPL framework.\n\nFix the problem by adding sanity check to ensure rp-\u003epriv-\u003erapl_defaults\nis always valid.",
  "id": "GHSA-2jv6-v65m-qjx7",
  "modified": "2024-05-01T06:31:42Z",
  "published": "2024-05-01T06:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26975"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0641908b906a133f1494c312a71f9fecbe2b6c78"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d1f5006ff95770da502f8cee2a224a1ff83866e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f73cf2ae5e0f4e629db5be3a4380ff7807148e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b254feb249981b66ccdb1dae54e757789a15ba1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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