ghsa-xjq6-89c2-fjjf
Vulnerability from github
Published
2022-05-13 01:14
Modified
2025-04-20 03:33
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details

The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.

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{
  "affected": [],
  "aliases": [
    "CVE-2017-5669"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-02-24T15:59:00Z",
    "severity": "HIGH"
  },
  "details": "The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.",
  "id": "GHSA-xjq6-89c2-fjjf",
  "modified": "2025-04-20T03:33:22Z",
  "published": "2022-05-13T01:14:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-5669"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.kernel.org/show_bug.cgi?id=192931"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3583-1"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/3583-2"
    },
    {
      "type": "WEB",
      "url": "http://www.debian.org/security/2017/dsa-3804"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/96754"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id/1037918"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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