{
  "affected": [],
  "aliases": [
    "CVE-2023-52605"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-06T07:15:11Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: extlog: fix NULL pointer dereference check\n\nThe gcc plugin -fanalyzer [1] tries to detect various\npatterns of incorrect behaviour.  The tool reports:\n\ndrivers/acpi/acpi_extlog.c: In function \u2018extlog_exit\u2019:\ndrivers/acpi/acpi_extlog.c:307:12: warning: check of \u2018extlog_l1_addr\u2019 for NULL after already dereferencing it [-Wanalyzer-deref-before-check]\n    |\n    |  306 |         ((struct extlog_l1_head *)extlog_l1_addr)-\u003eflags \u0026= ~FLAG_OS_OPTIN;\n    |      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~\n    |      |                                                  |\n    |      |                                                  (1) pointer \u2018extlog_l1_addr\u2019 is dereferenced here\n    |  307 |         if (extlog_l1_addr)\n    |      |            ~\n    |      |            |\n    |      |            (2) pointer \u2018extlog_l1_addr\u2019 is checked for NULL here but it was already dereferenced at (1)\n    |\n\nFix the NULL pointer dereference check in extlog_exit().",
  "id": "GHSA-mx2p-x42h-mmf6",
  "modified": "2024-03-18T15:30:47Z",
  "published": "2024-03-06T09:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52605"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33650372e3ead97c5ab3b84d9ad97737bc5e00c0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5457b0cbaa0238fc56b855c4ef2c0b9cc9c559ab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72d9b9747e78979510e9aafdd32eb99c7aa30dd1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77846571b3ba6a6125a20ad109bb8514ba884cf9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b17a71435e7e153e949df018244a98b4ede04069"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7b33627be0626b16ca321b982d6a2261ef7f703"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2049af7ddbc361702c3e1f09bd6c5e9488454ca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f066171de33d71ff0f7c46bd17636a5a26db3fb6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}