usn-5161-1
Vulnerability from osv_ubuntu
Published
2021-11-30 21:34
Modified
2026-06-03 10:45
Summary
linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities
Details

Ilja Van Sprundel discovered that the SCTP implementation in the Linux kernel did not properly perform size validations on incoming packets in some situations. An attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2021-3655)

It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3744, CVE-2021-3764)

It was discovered that the Aspeed Low Pin Count (LPC) Bus Controller implementation in the Linux kernel did not properly perform boundary checks in some situations, allowing out-of-bounds write access. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. In Ubuntu, this issue only affected systems running armhf kernels. (CVE-2021-42252)

References
To clipboard 

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    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-3655",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
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                  "type": "CVSS_V3"
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                {
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                  "type": "CVSS_V3"
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                {
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          "ecosystem": "Ubuntu:20.04:LTS"
        }
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          "type": "ECOSYSTEM"
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        "5.11.0-1013.14~20.04.1",
        "5.11.0-1016.17~20.04.1",
        "5.11.0-1017.18~20.04.1",
        "5.11.0-1019.20~20.04.1",
        "5.11.0-1020.21~20.04.1",
        "5.11.0-1021.22~20.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Ilja Van Sprundel discovered that the SCTP implementation in the Linux\nkernel did not properly perform size validations on incoming packets in\nsome situations. An attacker could possibly use this to expose sensitive\ninformation (kernel memory). (CVE-2021-3655)\n\nIt was discovered that the AMD Cryptographic Coprocessor (CCP) driver in\nthe Linux kernel did not properly deallocate memory in some error\nconditions. A local attacker could use this to cause a denial of service\n(memory exhaustion). (CVE-2021-3744, CVE-2021-3764)\n\nIt was discovered that the Aspeed Low Pin Count (LPC) Bus Controller\nimplementation in the Linux kernel did not properly perform boundary checks\nin some situations, allowing out-of-bounds write access. A local attacker\ncould use this to cause a denial of service (system crash) or possibly\nexecute arbitrary code. In Ubuntu, this issue only affected systems running\narmhf kernels. (CVE-2021-42252)\n",
  "id": "USN-5161-1",
  "modified": "2026-06-03T10:45:27Z",
  "published": "2021-11-30T21:34:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5161-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3655"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3744"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3764"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-42252"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oracle, linux-oracle-5.11, linux-raspi vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-3655",
    "UBUNTU-CVE-2021-3744",
    "UBUNTU-CVE-2021-3764",
    "UBUNTU-CVE-2021-42252"
  ]
}



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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.