FKIE_CVE-2017-5669

Vulnerability from fkie_nvd - Published: 2017-02-24 15:59 - Updated: 2026-06-17 01:21
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
cve@mitre.orghttp://www.debian.org/security/2017/dsa-3804Third Party Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/96754Third Party Advisory, VDB Entry
cve@mitre.orghttp://www.securitytracker.com/id/1037918Third Party Advisory, VDB Entry
cve@mitre.orghttps://bugzilla.kernel.org/show_bug.cgi?id=192931Issue Tracking, Patch, Vendor Advisory
cve@mitre.orghttps://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8Patch, Third Party Advisory
cve@mitre.orghttps://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7Patch, Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3583-1/Third Party Advisory
cve@mitre.orghttps://usn.ubuntu.com/3583-2/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2017/dsa-3804Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/96754Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1037918Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.kernel.org/show_bug.cgi?id=192931Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3583-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3583-2/Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
debian debian_linux 8.0
canonical ubuntu_linux 12.04
canonical ubuntu_linux 14.04
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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      ],
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  "cveTags": [],
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    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n do_shmat en ipc/shm.c en el kernel de Linux hasta la versi\u00f3n 4.9.12 no restringe la direcci\u00f3n calculada por cierta operaci\u00f3n de redondeo, lo que permite a usuarios locales asignar la p\u00e1gina cero, y como consecuencia, eludir un mecanismo de protecci\u00f3n que existe por la llamada de sistema mmap, haciendo llamadas a sistema shmget y shmat manipuladas en un contexto privilegiado."
    }
  ],
  "id": "CVE-2017-5669",
  "lastModified": "2026-06-17T01:21:00.543",
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        "baseSeverity": "MEDIUM",
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          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
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        "exploitabilityScore": 3.9,
        "impactScore": 6.4,
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        "obtainUserPrivilege": false,
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  "published": "2017-02-24T15:59:00.150",
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}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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