ghsa-2j3v-48pv-mvcj
Vulnerability from github
Published
2024-05-21 18:31
Modified
2024-05-21 18:31
Details

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

s390/dasd: protect device queue against concurrent access

In dasd_profile_start() the amount of requests on the device queue are counted. The access to the device queue is unprotected against concurrent access. With a lot of parallel I/O, especially with alias devices enabled, the device queue can change while dasd_profile_start() is accessing the queue. In the worst case this leads to a kernel panic due to incorrect pointer accesses.

Fix this by taking the device lock before accessing the queue and counting the requests. Additionally the check for a valid profile data pointer can be done earlier to avoid unnecessary locking in a hot path.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52774"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T16:15:16Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: protect device queue against concurrent access\n\nIn dasd_profile_start() the amount of requests on the device queue are\ncounted. The access to the device queue is unprotected against\nconcurrent access. With a lot of parallel I/O, especially with alias\ndevices enabled, the device queue can change while dasd_profile_start()\nis accessing the queue. In the worst case this leads to a kernel panic\ndue to incorrect pointer accesses.\n\nFix this by taking the device lock before accessing the queue and\ncounting the requests. Additionally the check for a valid profile data\npointer can be done earlier to avoid unnecessary locking in a hot path.",
  "id": "GHSA-2j3v-48pv-mvcj",
  "modified": "2024-05-21T18:31:20Z",
  "published": "2024-05-21T18:31:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52774"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6062c527d0403cef27c54b91ac8390c3a497b250"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9372aab5d0ff621ea203c8c603e7e5f75e888240"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c841de6247e94e07566d57163d3c0d8b29278f7a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db46cd1e0426f52999d50fa72cfa97fa39952885"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc96fde8fcb2b896fd6c64802a7f4ece2e69b0be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebdc569a07a3e8dbe66b4184922ad6f88ac0b96f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1ac7789406e2ca9ac51c41ad2daa597f47bdd4d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f75617cc8df4155374132f0b500b0b3ebb967458"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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