ghsa-j3cc-8mgg-5gq2
Vulnerability from github
Published
2025-10-28 12:30
Modified
2025-10-28 12:30
Details

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

tee: fix register_shm_helper()

In register_shm_helper(), fix incorrect error handling for a call to iov_iter_extract_pages(). A case is missing for when iov_iter_extract_pages() only got some pages and return a number larger than 0, but not the requested amount.

This fixes a possible NULL pointer dereference following a bad input from ioctl(TEE_IOC_SHM_REGISTER) where parts of the buffer isn't mapped.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-40031"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-28T12:15:36Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: fix register_shm_helper()\n\nIn register_shm_helper(), fix incorrect error handling for a call to\niov_iter_extract_pages(). A case is missing for when\niov_iter_extract_pages() only got some pages and return a number larger\nthan 0, but not the requested amount.\n\nThis fixes a possible NULL pointer dereference following a bad input from\nioctl(TEE_IOC_SHM_REGISTER) where parts of the buffer isn\u0027t mapped.",
  "id": "GHSA-j3cc-8mgg-5gq2",
  "modified": "2025-10-28T12:30:16Z",
  "published": "2025-10-28T12:30:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40031"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6a7874ab814ce12003c46a92f7afc9b035c8e8e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9338093db954918558677a468d32e77041c65167"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5cf5b37064b1699d946e8b7ab4ac7d7d101814c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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