ghsa-j56r-hrh7-8349
Vulnerability from github
Published
2025-11-13 00:30
Modified
2025-11-13 00:30
Details

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

xtensa: simdisk: add input size check in proc_write_simdisk

A malicious user could pass an arbitrarily bad value to memdup_user_nul(), potentially causing kernel crash.

This follows the same pattern as commit ee76746387f6 ("netdevsim: prevent bad user input in nsim_dev_health_break_write()")

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40193"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-12T22:15:46Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxtensa: simdisk: add input size check in proc_write_simdisk\n\nA malicious user could pass an arbitrarily bad value\nto memdup_user_nul(), potentially causing kernel crash.\n\nThis follows the same pattern as commit ee76746387f6\n(\"netdevsim: prevent bad user input in nsim_dev_health_break_write()\")",
  "id": "GHSA-j56r-hrh7-8349",
  "modified": "2025-11-13T00:30:18Z",
  "published": "2025-11-13T00:30:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40193"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/151bd88859474cdaccc1e4c8b21fbf72dbba2ab4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d5f08fd0cd970184376bee07d59f635c8403f63"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a0c2c36d864ef3676b05cfd8c58b72ee3214cb1a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d381de7fd4cdc928ede96987dc64b133e6480dd6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f40405ccfb87b71175f2d5d004c0b8a0aebcc2cf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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