gsd-2023-3640
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
A possible unauthorized memory access flaw was found in the Linux kernel's cpu_entry_area mapping of X86 CPU data to memory, where a user may guess the location of exception stacks or other important data. Based on the previous CVE-2023-0597, the 'Randomize per-cpu entry area' feature was implemented in /arch/x86/mm/cpu_entry_area.c, which works through the init_cea_offsets() function when KASLR is enabled. However, despite this feature, there is still a risk of per-cpu entry area leaks. This issue could allow a local user to gain access to some important data with memory in an expected location and potentially escalate their privileges on the system.
Aliases
Aliases
CVE-2023-3640


To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-3640",
    "id": "GSD-2023-3640"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      "details": "A possible unauthorized memory access flaw was found in the Linux kernel\u0027s cpu_entry_area mapping of X86 CPU data to memory, where a user may guess the location of exception stacks or other important data. Based on the previous CVE-2023-0597, the \u0027Randomize per-cpu entry area\u0027 feature was implemented in /arch/x86/mm/cpu_entry_area.c, which works through the init_cea_offsets() function when KASLR is enabled. However, despite this feature, there is still a risk of per-cpu entry area leaks. This issue could allow a local user to gain access to some important data with memory in an expected location and potentially escalate their privileges on the system.",
      "id": "GSD-2023-3640",
      "modified": "2023-12-13T01:20:54.413971Z",
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    }
  },
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      "lastModifiedDate": "2023-08-02T13:49Z",
      "publishedDate": "2023-07-24T16:15Z"
    }
  }
}


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