GHSA-MX48-2QJX-49H9

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31
VLAI
Details

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

proc: protect ptrace_may_access() with exec_update_lock (part 1)

Fix the easy cases where procfs currently calls ptrace_may_access() without exec_update_lock protection, where the fix is to simply add the extra lock or use mm_access():

  • do_task_stat(): grab exec_update_lock
  • proc_pid_wchan(): grab exec_update_lock
  • proc_map_files_lookup(): use mm_access() instead of get_task_mm()
  • proc_map_files_readdir(): use mm_access() instead of get_task_mm()
  • proc_ns_get_link(): grab exec_update_lock
  • proc_ns_readlink(): grab exec_update_lock
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{
  "affected": [],
  "aliases": [
    "CVE-2026-64371"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:20Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nproc: protect ptrace_may_access() with exec_update_lock (part 1)\n\nFix the easy cases where procfs currently calls ptrace_may_access() without\nexec_update_lock protection, where the fix is to simply add the extra lock\nor use mm_access():\n\n - do_task_stat(): grab exec_update_lock\n - proc_pid_wchan(): grab exec_update_lock\n - proc_map_files_lookup(): use mm_access() instead of get_task_mm()\n - proc_map_files_readdir(): use mm_access() instead of get_task_mm()\n - proc_ns_get_link(): grab exec_update_lock\n - proc_ns_readlink(): grab exec_update_lock",
  "id": "GHSA-mx48-2qjx-49h9",
  "modified": "2026-07-25T12:31:33Z",
  "published": "2026-07-25T12:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64371"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4bfe8c481846cee52473a2f7d7b30ee8e6749fc4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6650527444dadc63d84aa939d14ecba4fadb2f69"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7456ae990a9738962b33146916fabca62ae3d4e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae1e630bcaac739f625822078edbaea98366930d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c1cfd63326f5d09999134e9052c353faf738286e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d54f14655fd7d7b293698a8b6918563c4c0465e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9b4b03ccc9c69bf7f7298d4559906ebea7143b3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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