gsd-2023-52605
Vulnerability from gsd
Modified
2024-03-03 06:01
Details
In the Linux kernel, the following vulnerability has been resolved: ACPI: extlog: fix NULL pointer dereference check The gcc plugin -fanalyzer [1] tries to detect various patterns of incorrect behaviour. The tool reports: drivers/acpi/acpi_extlog.c: In function ‘extlog_exit’: drivers/acpi/acpi_extlog.c:307:12: warning: check of ‘extlog_l1_addr’ for NULL after already dereferencing it [-Wanalyzer-deref-before-check] | | 306 | ((struct extlog_l1_head *)extlog_l1_addr)->flags &= ~FLAG_OS_OPTIN; | | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ | | | | | (1) pointer ‘extlog_l1_addr’ is dereferenced here | 307 | if (extlog_l1_addr) | | ~ | | | | | (2) pointer ‘extlog_l1_addr’ is checked for NULL here but it was already dereferenced at (1) | Fix the NULL pointer dereference check in extlog_exit().
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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-52605"
      ],
      "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": "GSD-2023-52605",
      "modified": "2024-03-03T06:01:51.530548Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2023-52605",
        "STATE": "REJECT"
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "** REJECT ** This CVE ID has been rejected or withdrawn by its CVE Numbering Authority."
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority."
          }
        ],
        "id": "CVE-2023-52605",
        "lastModified": "2024-03-18T15:15:41.097",
        "metrics": {},
        "published": "2024-03-06T07:15:11.560",
        "references": [],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Rejected"
      }
    }
  }
}


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