ghsa-xv6f-4q9w-8q96
Vulnerability from github
Published
2024-04-03 15:30
Modified
2025-03-17 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:

parisc: BTLB: Fix crash when setting up BTLB at CPU bringup

When using hotplug and bringing up a 32-bit CPU, ask the firmware about the BTLB information to set up the static (block) TLB entries.

For that write access to the static btlb_info struct is needed, but since it is marked __ro_after_init the kernel segfaults with missing write permissions.

Fix the crash by dropping the __ro_after_init annotation.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2024-26705"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-03T15:15:53Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nparisc: BTLB: Fix crash when setting up BTLB at CPU bringup\n\nWhen using hotplug and bringing up a 32-bit CPU, ask the firmware about the\nBTLB information to set up the static (block) TLB entries.\n\nFor that write access to the static btlb_info struct is needed, but\nsince it is marked __ro_after_init the kernel segfaults with missing\nwrite permissions.\n\nFix the crash by dropping the __ro_after_init annotation.",
  "id": "GHSA-xv6f-4q9w-8q96",
  "modified": "2025-03-17T18:31:38Z",
  "published": "2024-04-03T15:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26705"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b"
    }
  ],
  "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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