usn-5813-1
Vulnerability from osv_ubuntu
Published
2023-01-19 17:44
Modified
2026-06-25 10:46
Summary
linux-aws-5.4, linux-gkeop, linux-hwe-5.4, linux-oracle, linux-snapdragon vulnerabilities
Details

It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-43945)

Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation in the Linux kernel contained multiple use-after-free vulnerabilities. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42896)

It was discovered that the Xen netback driver in the Linux kernel did not properly handle packets structured in certain ways. An attacker in a guest VM could possibly use this to cause a denial of service (host NIC availability). (CVE-2022-3643)

It was discovered that an integer overflow vulnerability existed in the Bluetooth subsystem in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2022-45934)

References
To clipboard 

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                  "score": "medium",
                  "type": "Ubuntu"
                }
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        }
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    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2022-3643",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-42896",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-43945",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2022-45934",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "linux-buildinfo-5.4.0-1062-gkeop",
            "binary_version": "5.4.0-1062.66"
          },
          {
            "binary_name": "linux-cloud-tools-5.4.0-1062-gkeop",
            "binary_version": "5.4.0-1062.66"
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        "name": "linux-gkeop",
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        "5.4.0-1043.44",
        "5.4.0-1046.48",
        "5.4.0-1048.51",
        "5.4.0-1049.52",
        "5.4.0-1051.54",
        "5.4.0-1052.55",
        "5.4.0-1053.56",
        "5.4.0-1054.57",
        "5.4.0-1056.60",
        "5.4.0-1057.61",
        "5.4.0-1060.64",
        "5.4.0-1061.65"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that the NFSD implementation in the Linux kernel did not\nproperly handle some RPC messages, leading to a buffer overflow. A remote\nattacker could use this to cause a denial of service (system crash) or\npossibly execute arbitrary code. (CVE-2022-43945)\n\nTam\u00e1s Koczka discovered that the Bluetooth L2CAP handshake implementation\nin the Linux kernel contained multiple use-after-free vulnerabilities. A\nphysically proximate attacker could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2022-42896)\n\nIt was discovered that the Xen netback driver in the Linux kernel did not\nproperly handle packets structured in certain ways. An attacker in a guest\nVM could possibly use this to cause a denial of service (host NIC\navailability). (CVE-2022-3643)\n\nIt was discovered that an integer overflow vulnerability existed in the\nBluetooth subsystem in the Linux kernel. A physically proximate attacker\ncould use this to cause a denial of service (system crash).\n(CVE-2022-45934)\n\n",
  "id": "USN-5813-1",
  "modified": "2026-06-25T10:46:10Z",
  "published": "2023-01-19T17:44:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5813-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-3643"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-42896"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-43945"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-45934"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "linux-aws-5.4, linux-gkeop, linux-hwe-5.4, linux-oracle, linux-snapdragon vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2022-3643",
    "UBUNTU-CVE-2022-42896",
    "UBUNTU-CVE-2022-43945",
    "UBUNTU-CVE-2022-45934"
  ]
}



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Tags
Taxonomy of the tags.





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.