ghsa-grfj-5cgf-q45r
Vulnerability from github
Published
2025-05-20 18:30
Modified
2025-11-18 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:

bnxt_en: Fix error handling path in bnxt_init_chip()

WARN_ON() is triggered in __flush_work() if bnxt_init_chip() fails because we call cancel_work_sync() on dim work that has not been initialized.

WARNING: CPU: 37 PID: 5223 at kernel/workqueue.c:4201 __flush_work.isra.0+0x212/0x230

The driver relies on the BNXT_STATE_NAPI_DISABLED bit to check if dim work has already been cancelled. But in the bnxt_open() path, BNXT_STATE_NAPI_DISABLED is not set and this causes the error path to think that it needs to cancel the uninitalized dim work. Fix it by setting BNXT_STATE_NAPI_DISABLED during initialization. The bit will be cleared when we enable NAPI and initialize dim work.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37895"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-20T16:15:25Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Fix error handling path in bnxt_init_chip()\n\nWARN_ON() is triggered in __flush_work() if bnxt_init_chip() fails\nbecause we call cancel_work_sync() on dim work that has not been\ninitialized.\n\nWARNING: CPU: 37 PID: 5223 at kernel/workqueue.c:4201 __flush_work.isra.0+0x212/0x230\n\nThe driver relies on the BNXT_STATE_NAPI_DISABLED bit to check if dim\nwork has already been cancelled.  But in the bnxt_open() path,\nBNXT_STATE_NAPI_DISABLED is not set and this causes the error\npath to think that it needs to cancel the uninitalized dim work.\nFix it by setting BNXT_STATE_NAPI_DISABLED during initialization.\nThe bit will be cleared when we enable NAPI and initialize dim work.",
  "id": "GHSA-grfj-5cgf-q45r",
  "modified": "2025-11-18T15:30:40Z",
  "published": "2025-05-20T18:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37895"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21116727f452474502ee74f956d5e7466103e19b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ab7a709c926c16b4433cf02d04fcbcf35aaab2b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e039b00ddbfeaa0dc59b8659be114f1a1b37c5bf"
    }
  ],
  "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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