usn-3523-2
Vulnerability from osv_ubuntu
Published
2018-01-10 13:19
Modified
2026-05-29 17:43
Summary
linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities
Details

USN-3523-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS.

Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5754)

Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel did not properly check the relationship between pointer values and the BPF stack. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-17863)

Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16995)

Alexei Starovoitov discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel contained a branch-pruning logic issue around unreachable code. A local attacker could use this to cause a denial of service. (CVE-2017-17862)

Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel mishandled pointer data values in some situations. A local attacker could use this to to expose sensitive information (kernel memory). (CVE-2017-17864)

References
To clipboard 

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        "4.13.0-1012.13"
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  ],
  "aliases": [],
  "details": "USN-3523-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10.\nThis update provides the corresponding updates for the Linux\nHardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu\n16.04 LTS.\n\nJann Horn discovered that microprocessors utilizing speculative execution\nand indirect branch prediction may allow unauthorized memory reads via\nsidechannel attacks. This flaw is known as Meltdown. A local attacker could\nuse this to expose sensitive information, including kernel memory.\n(CVE-2017-5754)\n\nJann Horn discovered that the Berkeley Packet Filter (BPF) implementation\nin the Linux kernel did not properly check the relationship between pointer\nvalues and the BPF stack. A local attacker could use this to cause a denial\nof service (system crash) or possibly execute arbitrary code.\n(CVE-2017-17863)\n\nJann Horn discovered that the Berkeley Packet Filter (BPF) implementation\nin the Linux kernel improperly performed sign extension in some situations.\nA local attacker could use this to cause a denial of service (system crash)\nor possibly execute arbitrary code. (CVE-2017-16995)\n\nAlexei Starovoitov discovered that the Berkeley Packet Filter (BPF)\nimplementation in the Linux kernel contained a branch-pruning logic issue\naround unreachable code. A local attacker could use this to cause a denial\nof service. (CVE-2017-17862)\n\nJann Horn discovered that the Berkeley Packet Filter (BPF) implementation\nin the Linux kernel mishandled pointer data values in some situations. A\nlocal attacker could use this to to expose sensitive information (kernel\nmemory). (CVE-2017-17864)\n",
  "id": "USN-3523-2",
  "modified": "2026-05-29T17:43:59Z",
  "published": "2018-01-10T13:19:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3523-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-5754"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-16995"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-17862"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-17863"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-17864"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2017-5754",
    "UBUNTU-CVE-2017-16995",
    "UBUNTU-CVE-2017-17862",
    "UBUNTU-CVE-2017-17863",
    "UBUNTU-CVE-2017-17864"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.