ghsa-6fx2-6qwr-35w9
Vulnerability from github
Published
2025-12-30 15:30
Modified
2025-12-30 15:30
Details

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

scsi: mpi3mr: Fix missing mrioc->evtack_cmds initialization

Commit c1af985d27da ("scsi: mpi3mr: Add Event acknowledgment logic") introduced an array mrioc->evtack_cmds but initialization of the array elements was missed. They are just zero cleared. The function mpi3mr_complete_evt_ack() refers host_tag field of the elements. Due to the zero value of the host_tag field, the function calls clear_bit() for mrico->evtack_cmds_bitmap with wrong bit index. This results in memory access to invalid address and "BUG: KASAN: use-after-free". This BUG was observed at eHBA-9600 firmware update to version 8.3.1.0. To fix it, add the missing initialization of mrioc->evtack_cmds.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-54234"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:16:11Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: mpi3mr: Fix missing mrioc-\u003eevtack_cmds initialization\n\nCommit c1af985d27da (\"scsi: mpi3mr: Add Event acknowledgment logic\")\nintroduced an array mrioc-\u003eevtack_cmds but initialization of the array\nelements was missed. They are just zero cleared. The function\nmpi3mr_complete_evt_ack() refers host_tag field of the elements. Due to the\nzero value of the host_tag field, the function calls clear_bit() for\nmrico-\u003eevtack_cmds_bitmap with wrong bit index. This results in memory\naccess to invalid address and \"BUG: KASAN: use-after-free\". This BUG was\nobserved at eHBA-9600 firmware update to version 8.3.1.0. To fix it, add\nthe missing initialization of mrioc-\u003eevtack_cmds.",
  "id": "GHSA-6fx2-6qwr-35w9",
  "modified": "2025-12-30T15:30:32Z",
  "published": "2025-12-30T15:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54234"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e0dfdb48a824deac3dfbc67fb856ef2aee13529"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67989091e11a974003ddf2ec39bc613df8eadd83"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e39ea831ebad4ab15c4748cb62a397a8abcca36e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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